18363( 2) - 24-Aug-2026 10:15:33 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18363 Version: 2 Check-in Time: 24-Aug-2026 10:15:33 STScI Edit Number: 0 Title CALYPSO: the Comprehensive Atlas of Low-mass Young Planet-hosting Stellar Objects ------------------------------------------------------------------------------------ Type Cycle GO 34 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Caeley V. Pittman Boston University Y CoI: Dr. Catherine Espaillat Boston University N CoI: Dr. Nuria Calvet University of Michigan N CoI: Ms. Marbely Micolta University of Michigan N CoI: Prof. Kevin France University of Colorado at Boulder N CoI: Dr. Gregory J. Herczeg Peking University N CoI: Dr. Carlo F. Manara European Southern Observatory - Germany N CoI: Dr. Juan M. Alcala INAF - Osservatorio Astronomico di N Capodimonte CoI: Dr. Connor Robinson Alfred University N CoI: Dr. Thanawuth Thanathibodee Chulalongkorn University N CoI: Rik Claes European Southern Observatory - Germany N CoI: Dr. Miguel Vioque European Southern Observatory - Germany N CoI: Dr. Justyn Campbell-White European Southern Observatory - Germany N CoI: Prof. Frederick M. Walter State University of New York at Stony N Brook CoI: Prof. Antonio Frasca INAF - Osservatorio Astrofisico di Catania N CoI: Dr. James Edward Owen University of California - Los Angeles N CoI: Dr. Innocenza Busa INAF - Istituto Nazionale di Astrofisica N CoI: Dra. Gladis Magris Centro de Investigaciones de Astronomia N CoI: Mr. Gabriel Felipe Avellaneda Universidad Simon Bolivar N Contreras CoI: Dr. Matthaus Schulik Imperial College London N CoI: Dr. Adina Feinstein Michigan State University N ------------------------------------------------------------------------------------ Abstract The ULLYSES Legacy Survey of low-mass pre-main sequence stars offers a once-in-a-lifetime opportunity to revolutionize our understanding of the relationship between young stars, their protoplanetary disks, and their infant exoplanets. However, ULLYSES almost exclusively targeted actively-accreting stars (classical T Tauri stars, CTTS), and we have very limited knowledge of their non-accreting counterparts (weak-lined T Tauri stars, WTTS) due to their lower UV luminosities. We propose to create a library of 40 WTTS to complete the ULLYSES sample and enable impactful science spanning from the beginning of the CTTS stage to the final stage of exoplanets around low-mass stars. This library enables two primary science goals: (1) To measure the most accurate mass accretion rates of young stars in order to constrain the timescale for stellar mass assembly and the onset of planet formation (one of the main science goals of ULLYSES). Contemporaneous Gemini/GHOST spectra will allow us to pair each CTTS with a chromospherically-matched WTTS and establish correlations between optical and UV chromospheric signatures. 18363( 2) - 24-Aug-2026 10:15:33 - [ 2] (2) To provide the most extensive source of FUV-NUV spectra of young stars to date to use for modeling exoplanet atmospheric escape rates and photochemistry for JWST during the most important stage of planet evolution. The CALYPSO WTTS library will complete ULLYSES's legacy in studies of young stars and launch the next phase of exoplanet atmospheric research. ------------------------------------------------------------------------------------ Observations Description ------------------------ We request 74 HST orbits and 11.15 hours on Gemini/GHOST to observe 28 new WTTS. HST COS and STIS are the only instruments that can complete the proposed science goals, which require broad UV spectral coverage (including emission lines) to measure the chromospheric and accretion shock emission. We need COS/G140L and STIS/G230L to fully sample the UV, and STIS G430L and G750L to provide absolute flux calibration for the Gemini spectra and place them in context in case of any variability. Including STIS G430L and G750L spectra does not add extra orbits because they are taken in the same visits as already required for G230L. We will employ the TIME-TAG feature to test for short time- scale changes during the observations. For each target, the number of orbits is based on the exposure time necessary to obtain a minimum continuum SNR of 5 with the 52x2 slit at 2200 A with the STIS G230L grating, 4500 A with G430L, 5500 A with G750L, and SNR=10 at N V with G140L. Inspection of the 12 archival WTTS shows this SNR is suitable for our science goals. These estimates are calculated using existing WTTS spectra of the closest spectral type, scaled by V-band magnitudes and corrected for extinction. Gemini/GHOST obtains high-resolution observations of the Ca ii H & K lines and the IRT simultaneously. Thus, we can measure correlations between these and UV emission signatures that can be applied to data from a broad range of ground-based spectrographs. ------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 LQ-LUP STAR, PRE-MAIN SEQUENCE RA=15H08M37.7354S +/- J2000 V = 10.645 STAR, T TAURI STAR 0.0000126", DEC=-44D23'17.05" +/- 0.0000116" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0019392169171854473 -0.021712000057050318 0.0068389 ------------------------------------------------------------------------------------------------------------------------------------ 2 MS-LUP STAR, PRE-MAIN SEQUENCE RA=15H25M59.6472S +/- J2000 V = 4.68 V = 10.969 U 11.97, B 11.67 STAR, T TAURI STAR 0.0000107", DEC=-45D01'15.82" +/- 0.0000108" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.001785771183972407 -0.021491000006790273 0.006634299999999999 ------------------------------------------------------------------------------------------------------------------------------------ 3 LT-LUP STAR, PRE-MAIN SEQUENCE RA=15H15M45.3719S +/- J2000 V = V = 10.67 U 12.00, B 11.61 STAR, T TAURI STAR 0.0000167", DEC=-33D31'59.73" -0.45 +/- 0.0000116" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.002106136652485855 -0.028249000092728238 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 4 2MASS-J16084 STAR, PRE-MAIN SEQUENCE RA=16H08M43.4068S +/- J2000 V = -6.1 V = 10.38 B 11.16 340-2602168 STAR, T TAURI STAR 0.0000568", DEC=-26D02'16.79" +/- 0.0000336" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -7.957679558300303E-4 -0.025180000011459924 0.0072423999999999995 ------------------------------------------------------------------------------------------------------------------------------------ 5 V1354-TAU STAR, PRE-MAIN SEQUENCE RA=04H57M30.6551S +/- J2000 V = 11.09 +/- 0.07 B 11.94, G 10.875 STAR, T TAURI STAR 0.0000201", DEC=+20D14'29.59" +/- 0.0000092" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -1.1049024147739813E-4 -0.01434699997844291 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J16055 STAR, PRE-MAIN SEQUENCE RA=16H05M50.6524S +/- J2000 V = 10.895 +/- 0.061 B 11.87, G 10.548 065-2533136 STAR, T TAURI STAR 0.0000180", DEC=-25D33'13.62" +/- 0.0000087" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0015923657567102362 -0.034236999999848194 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 5] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 7 MV-LUP STAR, PRE-MAIN SEQUENCE RA=15H49M59.2107S +/- J2000 V = 11.28 U 11.98, B 12.59 STAR, T TAURI STAR 0.0000145", DEC=-36D29'57.44" +/- 0.0000111" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0013356318258530857 -0.026655999954527942 0.0072633 ------------------------------------------------------------------------------------------------------------------------------------ 8 RX-J1608.9-3 STAR, PRE-MAIN SEQUENCE RA=16H08M54.2745S +/- J2000 V = 10.88 U 12.57, B 11.91 905 STAR, T TAURI STAR 0.0000166", DEC=-39D06'5.80" +/- 0.0000093" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -7.473091572016238E-4 -0.02313399995728105 0.0063799 ------------------------------------------------------------------------------------------------------------------------------------ 9 RX-J1547.7-4 STAR, PRE-MAIN SEQUENCE RA=15H47M41.7650S +/- J2000 V = 11.158 U 12.58, B 12.33 018 STAR, T TAURI STAR 0.0000160", DEC=-40D18'26.75" +/- 0.0000115" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.001538192900093531 -0.026576000050226867 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 6] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 10 RX-J1538.6-3 STAR, PRE-MAIN SEQUENCE RA=15H38M38.2726S +/- J2000 V = 11.61 B 12.64, G 11.18 916 STAR, T TAURI STAR 0.0000193", DEC=-39D16'55.36" +/- 0.0000147" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0017891474544502422 -0.03095400006714044 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 11 TWA-9A STAR, PRE-MAIN SEQUENCE RA=11H48M24.2227S +/- J2000 V = 11.17 B 12.54 STAR, T TAURI STAR 0.0000105", DEC=-37D28'49.11" +/- 0.0000083" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.004449139653649898 -0.01846499994826445 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 12 MT-LUP STAR, PRE-MAIN SEQUENCE RA=15H38M2.6519S +/- 0.0000149", J2000 V = 12.32 G 11.92 STAR, T TAURI STAR DEC=-38D07'23.08" +/- 0.0000117" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. K5.5 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0015633505617007799 -0.028001999976368097 0.0074876 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 7] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 13 2MASS-J15552 STAR, PRE-MAIN SEQUENCE RA=15H55M26.2195S +/- J2000 V = 12.45 U 14.51, B 13.58 621-3338232 STAR, T TAURI STAR 0.0000126", DEC=-33D38'23.29" +/- 0.0000089" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0014382550792391845 -0.029797999945913034 0.008376 ------------------------------------------------------------------------------------------------------------------------------------ 14 MU-LUP STAR, PRE-MAIN SEQUENCE RA=15H40M41.1705S +/- J2000 V = 12.35 G 11.944 STAR, T TAURI STAR 0.0000132", DEC=-37D56'18.54" +/- 0.0000098" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0017362535017412908 -0.02693699998417287 0.0074261 ------------------------------------------------------------------------------------------------------------------------------------ 15 RX-J1543.1-3 STAR, PRE-MAIN SEQUENCE RA=15H43M6.2455S +/- 0.0002999", J2000 V = 12.25 G 11.760 920 STAR, T TAURI STAR DEC=-39D20'19.48" +/- 0.0002266" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0013565883160792066 -0.020199000027787406 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 8] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 16 V826-TAU STAR, PRE-MAIN SEQUENCE RA=04H32M15.8393S +/- J2000 V = 12.074 B 13.51 STAR, T TAURI STAR 0.0000181", DEC=+18D01'38.75" +/- 0.0000104" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 8.433338890223848E-4 -0.019223999902351352 0.0069607 ------------------------------------------------------------------------------------------------------------------------------------ 17 TWA-6 STAR, PRE-MAIN SEQUENCE RA=10H18M28.6988S +/- J2000 V = 11.454 B 13.39, G 10.845 STAR, T TAURI STAR 0.0000101", DEC=-31D50'2.83" +/- 0.0000126" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.004431843470517521 -0.018204999901172414 0.0152456 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 9] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 18 V830-TAU STAR, PRE-MAIN SEQUENCE RA=04H33M10.0301S +/- J2000 V = 12.08 B 13.91 STAR, T TAURI STAR 0.0000149", DEC=+24D33'43.26" +/- 0.0000095" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 5.256299332349502E-4 -0.02119700004641345 0.0076704 ------------------------------------------------------------------------------------------------------------------------------------ 19 THA-15-43 STAR, PRE-MAIN SEQUENCE RA=16H11M53.3513S +/- J2000 V = 13.04 B 14.44 STAR, T TAURI STAR 0.0000133", DEC=-39D02'15.79" +/- 0.0000087" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0014832238376560377 -0.027262999947197386 0.0079771 ------------------------------------------------------------------------------------------------------------------------------------ 20 TWA-25 STAR, PRE-MAIN SEQUENCE RA=12H15M30.7203S +/- J2000 V = 11.16 B 13.09 STAR, T TAURI STAR 0.0000171", DEC=-39D48'42.61" +/- 0.0000120" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.006669878473444795 -0.02826900001764443 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 10] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 21 TWA-14 STAR, PRE-MAIN SEQUENCE RA=11H13M26.2209S +/- J2000 V = 12.478 G 11.88 STAR, T TAURI STAR 0.0000108", DEC=-45D23'42.72" +/- 0.0000138" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.004244490077137385 -0.0066959999912796775 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 22 TWA-13A+B STAR, PRE-MAIN SEQUENCE RA=11H21M17.2193S +/- J2000 V = 11.46 The A component has [V=11.46, STAR, T TAURI STAR 0.0000104", DEC=-34D46'45.50" B=12.88] and the B has [V=11.96, +/- 0.0000119" B=13.43] Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Coordinates are for the A component. Position angle from TWA 13A to TWA 13B: 147.1726 deg ORIENT = PA+45.35 from STIS IHB = 147.1726+45.35 = 192.5226=12.5226=372.5226 From roll ranges report: 30 Mar 2027 010.85 - 015.85 31 Mar 2027 012.55 - 012.55 30 Mar 2028 012.12 - 022.12 Set range 11.5-13.5 deg (and 191.5-193.5 deg) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0056003416682643215 -0.016866000078152865 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 23 2MASS-J11582 STAR, PRE-MAIN SEQUENCE RA=11H58M26.8127S +/- J2000 V = 14.29 B 15.85 681-7754450 STAR, T TAURI STAR 0.0000098", DEC=-77D54'45.27" +/- 0.0000111" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.012655946046629497 -0.005756000041401421 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 11] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 24 TWA-15A+B STAR, PRE-MAIN SEQUENCE RA=12H34M20.6481S +/- J2000 V = 14.3 The A component has V=14.4 and STAR, T TAURI STAR 0.0000126", DEC=-48D15'13.53" the B has V=14.3 +/- 0.0000098" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. V-band fluxes derived from the components' Gaia DR3 G and G_BP-G_RP magnitudes. Coordinates are for the A component. Position angle from TWA 15A to TWA 15B: 196.3011 deg ORIENT = PA+45.35 from STIS IHB = 196.3011+45.35 = 241.6511=61.6511 From roll ranges report: *******PROBLEM: NO ORIENT AVAILABILITY IN ROLL REPORT******* Set range [] deg (and [] deg) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0033763377474928876 -0.014256000054047036 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 25 TWA-15A STAR, PRE-MAIN SEQUENCE RA=12H34M20.6481S +/- J2000 V = 14.4 G 13.335 STAR, T TAURI STAR 0.0000126", DEC=-48D15'13.53" +/- 0.0000098" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. V-band flux derived from the Gaia DR3 G and G_BP-G_RP magnitudes. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0034388016310853563 -0.014717000021846616 0.0087132 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 12] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 26 TWA-15B STAR, PRE-MAIN SEQUENCE RA=12H34M20.4720S +/- J2000 V = 14.3 G 13.261 STAR, T TAURI STAR 0.0000115", DEC=-48D15'19.55" +/- 0.0000091" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. V-band flux derived from the Gaia DR3 G and G_BP-G_RP magnitudes. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0033842439263787293 -0.014263999901231728 0.00868 ------------------------------------------------------------------------------------------------------------------------------------ 27 2MASS-J04292 STAR, PRE-MAIN SEQUENCE RA=04H29M20.7036S +/- J2000 V = 14.58 U 17.35 071+2633406 STAR, T TAURI STAR 0.0000510", DEC=+26D33'40.45" +/- 0.0000332" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 5.44389893902393E-4 -0.021101000038470374 0.0077158 ------------------------------------------------------------------------------------------------------------------------------------ 28 SZ-121 STAR, PRE-MAIN SEQUENCE RA=16H10M12.1994S +/- J2000 V = 14.06 B 15.70 STAR, T TAURI STAR 0.0000179", DEC=-39D21'17.99" +/- 0.0000100" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -8.575275227979492E-4 -0.023250999947777018 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 13] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 29 V927-TAU STAR, PRE-MAIN SEQUENCE RA=04H31M23.8146S +/- 0.051", J2000 V = V = 14.73 +/- 0.01 B=16.30, G=13.363643 STAR, T TAURI STAR DEC=+24D10'52.98" +/- 0.055" 17.59980 0 Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 6.284800694383401E-4 -0.017800000091483525 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 14] Visit: 10 (RX-J1538.6-3916 - COS) Visit Requirements: GROUP 10, 11 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1538.6- COS/NUV ACQ/IMA PSA MIRRORA 1 4 S (4 S) 3916 GE Comments: SNR = 30 in 3s, ETC 2367178 Brightest Pixel (single exposure) = 42 counts/s Count rate entire detector = 1, 392 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1538.6- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10895, FP-POS=ALL, 1 489 S 3916 G LIFETIME-POS=LP11 (1956 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2129s, ETC 2367180 Expected SNR = 10 at 1238.8A (per resolution element) in 794s, ETC 2367181 1956s total exposure time gives SNR=15.7 at 1238.8A, ETC 2367182 Buffer time = 16343 * 2/3 = 10895 Brightest Pixel (single exposure) (at 1335.83 A) = 0.009 counts/s (C II), ETC 2367184 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1538.6-3916 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE RX-J1538.6-3916 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 15] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1538.6-3916 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G RX-J1538.6-3916 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G RX-J1538.6-3916 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 16] Visit: 11 (RX-J1538.6-3916 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1538.6- STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 3916 S) Comments: SNR=150 with 0.1s, ETC 2367232 Saturates in 1.4s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1538.6- STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1866, WAVECAL=NO 1 1254 S 3916 -MAMA G (1254 S) Comments: 1268s gives SNR = 6.3, ETC 2367241 BUFFER-TIME = 2, 332 * 4/5 = 1866 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 RX-J1538.6- STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 33 S (33 3916 S) Comments: Saturation in 331s 33s exposure gives SNR = 100, run number 2367239. Total counts > 10000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 RX-J1538.6- STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 19 S (19 3916 S) Comments: Saturation in 149s 19.3s exposure gives SNR = 100, run number 2367236. Total counts > 10000, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [ 17] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1538.6-3916 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A RX-J1538.6-3916 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A RX-J1538.6-3916 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A RX-J1538.6-3916 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A RX-J1538.6-3916 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A RX-J1538.6-3916 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 18] Visit: 12 (TWA-9A - COS) Visit Requirements: GROUP 12, 13 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-9A COS/NUV ACQ/IMA PSA MIRRORA 1 4 S (4 S) GE Comments: SNR = 30 in 2.7s, ETC 2367244 Brightest Pixel (single exposure) = 45.6 counts/s Count rate entire detector = 1, 420 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-9A COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10891, FP-POS=ALL, 1 489 S G LIFETIME-POS=LP11 (1956 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 1010s, ETC 2367246 Expected SNR = 10 at 1238.8A (per resolution element) in 331s, ETC 2367247 1956s total exposure time gives SNR=24 at 1238.8A, ETC 2367248 Buffer time = 16336 * 2/3 = 10891 Brightest Pixel (single exposure) (at 1335.83 A) = 0.009 counts/s (C II), ETC 2367250 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-9A 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE TWA-9A 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 19] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-9A 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G TWA-9A 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G TWA-9A 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 20] Visit: 13 (TWA-9A - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-9A STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.05s, ETC 2367253 Saturates in 0.8s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-9A STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1882, WAVECAL=NO 1 1270 S -MAMA G (1270 S) Comments: 1270s gives SNR = 6.6, ETC 2367257 BUFFER-TIME = 2, 353 * 4/5 = 1882 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-9A STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 24 S (24 S) Comments: Saturation in 215s 24s exposure gives SNR = 100, run number 2367255. Total counts > 10000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-9A STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 13 S (13 S) Comments: Saturation in 70s 12.2s exposure gives SNR = 100, run number 2367254. Total counts > 10000, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [ 21] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-9A 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-9A 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A TWA-9A 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A TWA-9A 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A TWA-9A 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A TWA-9A 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 22] Visit: 14 (MT-LUP - COS) Visit Requirements: GROUP 14, 15 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K5.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MT-LUP COS/NUV ACQ/IMA PSA MIRRORA 1 10 S (10 GE S) Comments: SNR = 30 in 8.1026s, ETC 2367340 Brightest Pixel (single exposure) = 15.432 counts/s Count rate entire detector = 1, 203.487 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 MT-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11437, FP-POS=ALL, 1 486 S G LIFETIME-POS=LP11 (1944 S) Comments: 1928s total exposure time gives SNR=13.8 at 1238.8A, ETC 2367339 Buffer time = 17155 * 2/3 = 11437 Brightest Pixel (single exposure) (at 1335.83 A) ~ 0.009 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MT-LUP 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE MT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G MT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G MT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G MT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 23] Visit: 15 (MT-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K5.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MT-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.1726s, ETC 2367341 Saturates in 2.48s ------------------------------------------------------------------------------------------------------------------------------------ 2 MT-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1951, WAVECAL=NO 1 1264 S -MAMA G (1264 S) Comments: 1250s gives SNR = 2.7 at 2200A, ETC 2367344. Will bin spectrum by factor of 3.4 to reach SNR=5. BUFFER-TIME = 2, 438.51 * 4/5 = 1951 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MT-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 28 S (28 S) Comments: 27.8988s exposure gives SNR = 60, ETC 2367343. Total counts 4, 597.74, so not using E1 pseudoaperture. Saturation in 612.07s Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 24] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 MT-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 15 S (15 S) Comments: Saturation in 258.86s 14.1026s exposure gives SNR = 60, run number 2367342. Total counts 4, 586.33, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MT-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A MT-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A MT-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A MT-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A MT-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A MT-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 25] Visit: 16 (2MASS-J15552621-3338232 - COS) Visit Requirements: GROUP 16, 17 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1555 COS/NUV ACQ/IMA PSA MIRRORA 1 9 S (9 S) 2621-333823 GE 2 Comments: SNR = 30 in 8.5s, ETC 2367282 Brightest Pixel (single exposure) = 14.8 counts/s Count rate entire detector = 1, 199 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1555 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11383, FP-POS=ALL, 1 485 S 2621-333823 G LIFETIME-POS=LP11 (1940 S) 2 Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2559s, ETC 2367283 Expected SNR = 10 at 1238.8A (per resolution element) in 815s, ETC 2367285 1940s total exposure time gives SNR=15.4 at 1238.8A, ETC 2367286 Buffer time = 17075 * 2/3 = 11383 Brightest Pixel (single exposure) (at 1335.83 A) ~ 0.009 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J15552621-333 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 8232 GE 18363( 2) - 24-Aug-2026 10:15:33 - [ 26] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J15552621-333 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A 8232 G 2MASS-J15552621-333 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A 8232 G 2MASS-J15552621-333 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A 8232 G 2MASS-J15552621-333 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A 8232 G 18363( 2) - 24-Aug-2026 10:15:33 - [ 27] Visit: 17 (2MASS-J15552621-3338232 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1555 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 2621-333823 S) 2 Comments: SNR=150 with 0.17s, ETC 2367287 Saturates in 2.5s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1555 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1946, WAVECAL=NO 1 1257 S 2621-333823 -MAMA G (1257 S) 2 Comments: 1257s gives SNR = 3.2, ETC 2367290. Will bin spectrum by factor of 2.4 to reach SNR=5. BUFFER-TIME = 2, 433 * 4/5 = 1946 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 2MASS-J1555 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 30 S (30 2621-333823 S) 2 Comments: 30s exposure gives SNR = 57, ETC 2367288. Total counts = 4187, so not using E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 28] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J1555 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 16 S (16 2621-333823 S) 2 Comments: Saturation in 230s 16s exposure gives SNR = 58, run number 2367289. Total counts = 4367, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J15552621-333 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 8232 2MASS-J15552621-333 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A 8232 -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A 2MASS-J15552621-333 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A 8232 2MASS-J15552621-333 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A 8232 2MASS-J15552621-333 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A 8232 2MASS-J15552621-333 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A 8232 WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 29] Visit: 18 (MU-LUP - COS) Visit Requirements: GROUP 18, 19 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-LUP COS/NUV ACQ/IMA PSA MIRRORA 1 10 S (10 GE S) Comments: SNR = 30 in 8.3s, ETC 2367291 Brightest Pixel (single exposure) = 15 counts/s Count rate entire detector = 1, 200 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11404, FP-POS=ALL, 1 486 S G LIFETIME-POS=LP11 (1944 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 3183s, ETC 2367292 Expected SNR = 10 at 1238.8A (per resolution element) in 1033s, ETC 2367293 1944s total exposure time gives SNR=13.7 at 1238.8A, ETC 2367294 Buffer time = 17106 * 2/3 = 11404 Brightest Pixel (single exposure) (at 1335.83 A) ~ 0.009 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MU-LUP 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE MU-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 30] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MU-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G MU-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G MU-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 31] Visit: 19 (MU-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.17s, ETC 2367295 Saturates in 2.5s ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1950, WAVECAL=NO 1 1262 S -MAMA G (1262 S) Comments: 1262s gives SNR = 3 at 2200A, ETC 2367298. Will bin spectrum by factor of 2.7 to reach SNR=5. BUFFER-TIME = 2, 437 * 4/5 = 1950 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MU-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 30 S (30 S) Comments: 30s exposure gives SNR = 60, ETC 2367296. Total counts = 4589, so not using E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 MU-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 15 S (15 S) Comments: Saturation in 230s 14.4s exposure gives SNR = 60, run number 2367297. Total counts = 4587, so not using E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [ 32] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MU-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A MU-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A MU-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A MU-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A MU-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A MU-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 33] Visit: 1C (LQ-LUP - COS) Visit Requirements: GROUP 1C, 1S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 G8 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LQ-LUP COS/NUV ACQ/IMA PSA MIRRORB 1 12 S (12 GE S) Comments: SNR = 20 in 5.2s, ETC 2360992 SNR = 30 in 12s, ETC 2367070 Brightest Pixel (single exposure) = 10.4 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 LQ-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9723, FP-POS=ALL, 1 487 S G LIFETIME-POS=LP11 (1948 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2618s, ETC 2367073 Expected SNR = 10 at 1238.8A (per resolution element) in 1063s, ETC 2367074 1948s total exposure time gives expected SNR=13.5 at 1238.8A, ETC 2367080 Buffer time = 14, 584 * 2/3 = 9723 Brightest Pixel (single exposure) (at 1335.75 A) = 0.017 counts/s (C II), ETC 2367079 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LQ-LUP 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 18363( 2) - 24-Aug-2026 10:15:33 - [ 34] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LQ-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G LQ-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G LQ-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G LQ-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 35] Visit: 1S (LQ-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 G8 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LQ-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.05s, ETC 2367117 0.2s gives SNR=290, ETC 2367127 Saturates in 0.75s ------------------------------------------------------------------------------------------------------------------------------------ 2 LQ-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1158, WAVECAL=NO 1 1297 S -MAMA G (1297 S) Comments: 1297s gives SNR = 10.6 at 2200A, ETC 2367130 BUFFER-TIME = 1448 * 4/5 = 1158 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 LQ-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 11 S (11 S) Comments: Saturation in 140s 10.5s exposure gives SNR = 99, run number 2367129. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 36] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 LQ-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 7 S (7 S) Comments: Saturation in 75s 8s exposure gives SNR = 99, run number 2367128. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LQ-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A LQ-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A LQ-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A LQ-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A LQ-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A LQ-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 37] Visit: 20 (RX-J1543.1-3920 - COS) Visit Requirements: GROUP 20, 21 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1543.1- COS/NUV ACQ/IMA PSA MIRRORA 1 8 S (8 S) 3920 GE Comments: SNR = 30 in 6.9s, ETC 2367299 Brightest Pixel (single exposure) = 18 counts/s Count rate entire detector = 1, 222 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1543.1- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11321, FP-POS=ALL, 1 487 S 3920 G LIFETIME-POS=LP11 (1948 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2993s, ETC 2367300 Expected SNR = 10 at 1238.8A (per resolution element) in 1003s, ETC 2367301 1948s total exposure time gives SNR=13.9 at 1238.8A, ETC 2367302 Buffer time = 16982 * 2/3 = 11321 Brightest Pixel (single exposure) (at 1335.83 A) ~ 0.009 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1543.1-3920 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE RX-J1543.1-3920 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 38] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1543.1-3920 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G RX-J1543.1-3920 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G RX-J1543.1-3920 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 39] Visit: 21 (RX-J1543.1-3920 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K5 WTTS RECX1 K6 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1543.1- STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 3920 S) Comments: SNR=150 with 0.15s, ETC 2367303 Saturates in 2.2s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1543.1- STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1938, WAVECAL=NO 1 1268 S 3920 -MAMA G (1268 S) Comments: 1268s gives SNR = 3.8 at 2200A, ETC 2367306. Will bin spectrum by factor of 1.7 to reach SNR=5. BUFFER-TIME = 2, 423 * 4/5 = 1938 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 RX-J1543.1- STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 26 S (26 3920 S) Comments: 26s exposure gives SNR = 60, ETC 2367304. Total counts > 4589, so not using E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 RX-J1543.1- STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 14 S (14 3920 S) Comments: Saturation in 210s 13.9s exposure gives SNR = 60, run number 2367305. Total counts > 4580, so not using E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [ 40] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1543.1-3920 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A RX-J1543.1-3920 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A RX-J1543.1-3920 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A RX-J1543.1-3920 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A RX-J1543.1-3920 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A RX-J1543.1-3920 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 41] Visit: 22 (V826-TAU - COS) Visit Requirements: GROUP 22, 23 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS SO879 ([HHM2007] 879) K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V826-TAU COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) GE Comments: SNR = 30 in 5.9785s, ETC 2367345 Brightest Pixel (single exposure) = 20.910 counts/s Count rate entire detector = 1, 242.951 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 V826-TAU COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11647, FP-POS=ALL, 1 484 S G LIFETIME-POS=LP11 (1936 S) Comments: 1928s total exposure time gives SNR=12.5 at 1238.8A, ETC 2367346 Buffer time = 17470 * 2/3 = 11647 Brightest Pixel (single exposure) (at 1238.81 A) = 0.002 counts/s (N V), ETC 2367312 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V826-TAU 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE V826-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G V826-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G V826-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G V826-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 42] Visit: 23 (V826-TAU - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS SO879 ([HHM2007] 879) K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V826-TAU STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.0993s, ETC 2367347 Saturates in 1.50s ------------------------------------------------------------------------------------------------------------------------------------ 2 V826-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1907, WAVECAL=NO 1 1252 S -MAMA G (1252 S) Comments: 1253s gives SNR = 2.1 at 2300A, ETC 2367444. Will bin spectrum by factor of 5.5 to reach SNR=5. BUFFER-TIME = 2, 383.13 * 4/5 = 1907 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V826-TAU STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 27 S (27 S) Comments: 27s exposure gives SNR = 60, ETC 2367349. Total counts 4, 596.68, so not using E1 pseudoaperture. Saturation in 501s Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 43] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 V826-TAU STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 12 S (12 S) Comments: Saturation in 120s 12s exposure gives SNR = 60, run number 2367348. Total counts 4, 584.52, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V826-TAU 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A V826-TAU 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A V826-TAU 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A V826-TAU 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A V826-TAU 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A V826-TAU 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 44] Visit: 24 (TWA-6 - COS) Visit Requirements: GROUP 24, 25 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-6 COS/NUV ACQ/IMA PSA MIRRORA 1 4 S (4 S) GE Comments: SNR = 30 in 2.9s, ETC 2367351 Brightest Pixel (single exposure) = 42.6 counts/s Count rate entire detector = 1, 399 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11565, FP-POS=ALL, 1 485 S G LIFETIME-POS=LP11 (1940 S) Comments: 1928s total exposure time gives SNR=27.4 at 1238.8A, ETC 2367353 Buffer time = 17347 * 2/3 = 11565 Brightest Pixel (single exposure) (at 1238.81 A) ~ 0.002 counts/s (N V) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-6 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE TWA-6 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G TWA-6 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G TWA-6 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G TWA-6 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 45] Visit: 25 (TWA-6 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-6 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.0613s, ETC 2367352 Saturates in 0.91s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-6 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1901, WAVECAL=NO 1 1281 S -MAMA G (1281 S) Comments: 1271s gives SNR = 4.8 at 2300A, ETC 2367445. Will bin spectrum by factor of 1.1 to reach SNR=5. BUFFER-TIME = 2, 264 * 4/5 = 1811 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-6 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 14 S (14 S) Comments: 14s exposure gives SNR = 60, ETC 2367354. Total counts 4, 586.01, so not using E1 pseudoaperture. Saturation in 283s Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 46] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-6 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 7 S (7 S) Comments: Saturation in 71s 7s exposure gives SNR = 60, run number 2367355. Total counts 4, 580.13, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-6 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-6 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A TWA-6 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A TWA-6 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A TWA-6 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A TWA-6 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 47] Visit: 26 (V830-TAU - COS) Visit Requirements: GROUP 26, 27 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS SO879 ([HHM2007] 879) K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V830-TAU COS/NUV ACQ/IMA PSA MIRRORA 1 5 S (5 S) GE Comments: SNR = 30 in 2.9s, ETC 2367307 Brightest Pixel (single exposure) = 42.6 counts/s Count rate entire detector = 1, 399 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 V830-TAU COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11329, FP-POS=ALL, 1 485 S G LIFETIME-POS=LP11 (1940 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 3198s, ETC 2367322 Expected SNR = 10 at 1238.8A (per resolution element) in 987s, ETC 2367323 1940s total exposure time gives SNR=14 at 1238.8A, ETC 2367324 Buffer time = 16993 * 2/3 = 11329 Brightest Pixel (single exposure) (at 1238.81 A) = 0.002 counts/s (N V), ETC 2367312 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V830-TAU 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 18363( 2) - 24-Aug-2026 10:15:33 - [ 48] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V830-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G V830-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G V830-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G V830-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 49] Visit: 27 (V830-TAU - 2STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS SO879 ([HHM2007] 879) K7 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V830-TAU STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.1s, ETC 2367314 Saturates in 1.6s ------------------------------------------------------------------------------------------------------------------------------------ 2 V830-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1917, WAVECAL=NO 1 2151 S -MAMA G (2151 S) Comments: 3782s gives SNR = 3.0 at 2300A, ETC 2367487. Will bin spectrum by factor of 2.9 to reach SNR=5. BUFFER-TIME = 2, 395.98 * 4/5 = 1917 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V830-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1917, WAVECAL=NO 1 1631 S -MAMA G (1631 S) Comments: 3782s gives SNR = 3.0 at 2300A, ETC 2367487. Will bin spectrum by factor of 2.9 to reach SNR=5. BUFFER-TIME = 2, 395.98 * 4/5 = 1917 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 50] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 V830-TAU STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 28 S (28 S) Comments: 28s exposure gives SNR = 60, ETC 2367361. Total counts 4, 597.83, so not using E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 8 V830-TAU STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 12 S (12 S) Comments: Saturation in 134s 12s exposure gives SNR = 60, run number 2367360. Total counts 4, 584.62, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V830-TAU 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A V830-TAU 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA V830-TAU 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA WAVE 6 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 2 N/A V830-TAU 7 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 2 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 51] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V830-TAU 7 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 2 N/A V830-TAU 8 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 2 N/A V830-TAU 8 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 2 N/A WAVE 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 2 N/A CCDFLAT 10 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 2 N/A CCDFLAT 10 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 2 N/A CCDFLAT 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 2 N/A CCDFLAT 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 2 N/A CCDFLAT 12 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 2 N/A CCDFLAT 12 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 2 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 52] Visit: 28 (THA-15-43 - COS) Visit Requirements: GROUP 28, 29 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS TWA 6 K7.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 THA-15-43 COS/NUV ACQ/IMA PSA MIRRORA 1 14 S (14 GE S) Comments: SNR = 30 in 12.7064s, ETC 2367364 Brightest Pixel (single exposure) = 9.846 counts/s Count rate entire detector = 1, 163.242 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 THA-15-43 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11648, FP-POS=ALL, 1 484 S G LIFETIME-POS=LP11 (1936 S) Comments: 1928s total exposure time gives SNR=14.3 at 1238.8A, ETC 2367363 Buffer time = 17472 * 2/3 = 11648 Brightest Pixel (single exposure) (at 1238.81 A) ~ 0.002 counts/s (N V) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ THA-15-43 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE THA-15-43 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G THA-15-43 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G THA-15-43 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G THA-15-43 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 53] Visit: 29 (THA-15-43 - 2STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K7 WTTS HBC 427 OPT ETC Template is a K7 WTTS TWA 6 K7.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 THA-15-43 STIS/CCD ACQ F28X50LP MIRROR 1 0.4 S (0.4 S) Comments: SNR=150 with 0.2651s, ETC 2367365 Saturates in 3.96s ------------------------------------------------------------------------------------------------------------------------------------ 2 THA-15-43 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 2164 S -MAMA G (2164 S) Comments: 3782s gives SNR = 2.7 at 2300A, ETC 2367488. Will bin spectrum by factor of 3.4 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 THA-15-43 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 1594 S -MAMA G (1594 S) Comments: 3782s gives SNR = 2.7 at 2300A, ETC 2367488. Will bin spectrum by factor of 3.4 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 THA-15-43 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 60 S (60 S) Comments: 60s exposure gives SNR = 60, ETC 2367367. Total counts 4, 624.54, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 54] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 THA-15-43 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 29 S (29 S) Comments: Saturation in 308s 29s exposure gives SNR = 60, run number 2367366. Total counts 4, 598.99, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ THA-15-43 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A THA-15-43 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA THA-15-43 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA WAVE 6 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 2 N/A THA-15-43 7 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 2 N/A THA-15-43 7 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 2 N/A THA-15-43 8 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 2 N/A THA-15-43 8 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 2 N/A WAVE 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 2 N/A CCDFLAT 10 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 2 N/A CCDFLAT 10 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 2 N/A CCDFLAT 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 2 N/A CCDFLAT 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 2 N/A CCDFLAT 12 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 2 N/A CCDFLAT 12 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 2 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 55] Visit: 2C (MS-LUP - COS) Visit Requirements: GROUP 2C, 2S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 G9 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MS-LUP COS/NUV ACQ/IMA PSA MIRRORB 1 19 S (19 GE S) Comments: SNR = 30 in 18.6s, ETC 2367090 ------------------------------------------------------------------------------------------------------------------------------------ 2 MS-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10349, FP-POS=ALL, 1 486 S G LIFETIME-POS=LP11 (1944 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 3240s, ETC 2367091 Expected SNR = 10 at 1238.8A (per resolution element) in 1201s, ETC 2367092 1944s total exposure time gives expected SNR=12.7 at 1238.8A, ETC 2367094 Buffer time = 15, 524 * 2/3 = 10349 Brightest Pixel (single exposure) (at 1335.75 A) = 0.011 counts/s (C II), ETC 2367095 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MS-LUP 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE MS-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G MS-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G MS-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 56] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MS-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 57] Visit: 2S (MS-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 G9 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MS-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.07s, ETC 2367134 Saturates in 0.9s ------------------------------------------------------------------------------------------------------------------------------------ 2 MS-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1366, WAVECAL=NO 1 1295 S -MAMA G (1295 S) Comments: 1295s gives SNR = 8 at 2200A, ETC 2367133 Buffer time = 1707 * 4/5 = 1366 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MS-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 16 S (16 S) Comments: Saturation in 190s 15.6s exposure gives SNR = 100, run number 2367132. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 58] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 MS-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 11 S (11 S) Comments: Saturation in 97s 10.9s exposure gives SNR = 99, run number 2367131. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MS-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A MS-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A MS-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A MS-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A MS-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A MS-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 59] Visit: 30 (TWA-25 - COS) Visit Requirements: GROUP 30, 31 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M1 WTTS TWA 7 M0 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-25 COS/NUV ACQ/IMA PSA MIRRORB 1 36 S (36 GE S) Comments: SNR = 30 in 35.0775s, ETC 2367459 [MIRRORB] Brightest Pixel (single exposure) = 3.576 counts/s Count rate entire detector = 1, 129.883 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-25 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11047, FP-POS=ALL, 1 473 S G LIFETIME-POS=LP11 (1892 S) Comments: 1928s total exposure time gives SNR=33.9 at 1238.8A, ETC 2367373 Buffer time = 16571 * 2/3 = 11047 Brightest Pixel (single exposure) (at 1238.81 A) ~ 0.002 counts/s (N V) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-25 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE TWA-25 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G TWA-25 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G TWA-25 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G TWA-25 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 60] Visit: 31 (TWA-25 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M1 WTTS TWA 7 M0 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-25 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.0440s, ETC 2367375 Saturates in 0.66s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-25 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1508, WAVECAL=NO 1 1280 S -MAMA G (1280 S) Comments: 1265s gives SNR = 11.5 at 2200A, ETC 2367378. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 1, 884.77 * 4/5 = 1508 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-25 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 22 S (22 S) Comments: 22s exposure gives SNR = 60, ETC 2367377. Total counts 4, 592.50, so not using E1 pseudoaperture. Saturation in 195s Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-25 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 5 S (5 S) Comments: Saturation in 50s 5s exposure gives SNR = 60, run number 2367376. Total counts 4, 578.53, so not using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 61] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-25 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-25 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A TWA-25 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A TWA-25 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A TWA-25 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A TWA-25 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 62] Visit: 32 (TWA-14 - COS) Visit Requirements: GROUP 32, 33 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M1 WTTS TWA 7 M0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-14 COS/NUV ACQ/IMA PSA MIRRORA 1 5 S (5 S) GE Comments: SNR = 30 in 3.2733s, ETC 2367379 Brightest Pixel (single exposure) = 38.179 counts/s Count rate entire detector = 1, 367.365 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-14 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11290, FP-POS=ALL, 1 493 S G LIFETIME-POS=LP11 (1972 S) Comments: 1928s total exposure time gives SNR=19.9 at 1238.8A, ETC 2367380 Buffer time = 16935 * 2/3 = 11290 Brightest Pixel (single exposure) (at 1238.81 A) ~ 0.002 counts/s (N V) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-14 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE TWA-14 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G TWA-14 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G TWA-14 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G TWA-14 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 63] Visit: 33 (TWA-14 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M1 WTTS TWA 7 M0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-14 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.1280s, ETC 2367381 Saturates in 1.97s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-14 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1708, WAVECAL=NO 1 1251 S -MAMA G (1251 S) Comments: 1216s gives SNR = 9.2 at 2200A, ETC 2367384. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 135.22 * 4/5 = 1708 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-14 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 56 S (56 S) Comments: 56s exposure gives SNR = 60, ETC 2367383. Total counts 4, 621.00, so not using E1 pseudoaperture. Saturation in 712s Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-14 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 19 S (19 S) Comments: Saturation in 129s 19s exposure gives SNR = 60, run number 2367382. Total counts 4, 590.67, so not using E1 pseudoaperture.. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) 18363( 2) - 24-Aug-2026 10:15:33 - [ 64] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-14 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-14 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A TWA-14 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A TWA-14 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A TWA-14 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A TWA-14 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 65] Visit: 34 (TWA-13A+B - STIS) Visit Requirements: ORIENT 11.5D TO 13.5 D; ORIENT 191.5D TO 193.5 D On Hold Comments: Additional Comments: UV ETC Template is an M1 WTTS TWA 7 M1+M1 Orient contraints will enable simultaneous observation of both components with 52x2 slit. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-13A+B STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: Coordinates set to acquire TWA 13 A. TWA 13 A: SNR=150 with 0.0479s, ETC 2367388. Saturates in 0.75s TWA 13 B: SNR=150 with 0.0736s, ETC 2367395. Saturates in 1.14s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-13A+B STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1376, WAVECAL=NO 1 1247 S -MAMA G (1247 S) Comments: TWA 13 A: 1264s gives SNR = 16.4 at 2200A, ETC 2367390. BUFFER-TIME = 1, 719.52 * 4/5 = 1376 TWA 13 B: 1237s gives SNR = 7.8 at 2200A, ETC 2367396. BUFFER-TIME = 2, 139.61 * 4/5 = 1712 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-13A+B STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 44 S (44 S) Comments: TWA 13 A: 20s exposure gives SNR = 60, ETC 2367387. Total counts 4, 591.43, so not using E1 pseudoaperture. Saturation in 264s. TWA 13 B: 44s exposure gives SNR = 60, ETC 2367393. Total counts 4, 611.19, so not using E1 pseudoaperture. Saturation in 399s. 18363( 2) - 24-Aug-2026 10:15:33 - [ 66] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-13A+B STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 11 S (11 S) Comments: TWA 13 A: 7s exposure gives SNR = 60, run number 2367389. Total counts 4, 580.59, so not using E1 pseudoaperture. Saturation in 44s. TWA 13 B: 11s exposure gives SNR = 60, run number 2367392. Total counts 4, 583.48, so not using E1 pseudoaperture. Saturation in 98s. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-13A+B 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-13A+B 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A TWA-13A+B 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A TWA-13A+B 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A TWA-13A+B 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A TWA-13A+B 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 67] Visit: 35 (2MASS-J11582681-7754450 - 2COS) Visit Requirements: GROUP 35, 36 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M3 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1158 COS/NUV ACQ/IMA PSA MIRRORA 1 19 S (19 2681-775445 GE S) 0 Comments: SNR = 30 in 17.8716s, ETC 2367403 Brightest Pixel (single exposure) = 7.005 counts/s Count rate entire detector = 1, 142.771 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1158 COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1148 S 2681-775445 G BUFFER-TIME=11549 (1148 S) 0 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=27.8 at 1238.8A, ETC 2367464 Buffer time = 17323 * 2/3 = 11549 ------------------------------------------------------------------------------------------------------------------------------------ 3 2MASS-J1158 COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1148 S 2681-775445 G BUFFER-TIME=11549 (1148 S) 0 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=27.8 at 1238.8A, ETC 2367464 Buffer time = 17323 * 2/3 = 11549 ------------------------------------------------------------------------------------------------------------------------------------ 4 2MASS-J1158 COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1297 S 2681-775445 G BUFFER-TIME=11549 (1297 S) 0 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=27.8 at 1238.8A, ETC 2367464 Buffer time = 17323 * 2/3 = 11549 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 68] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 2MASS-J1158 COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1296 S 2681-775445 G BUFFER-TIME=11549 (1296 S) 0 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=27.8 at 1238.8A, ETC 2367464 Buffer time = 17323 * 2/3 = 11549 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J11582681-775 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 4450 GE 2MASS-J11582681-775 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A 4450 G 2MASS-J11582681-775 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A 4450 G 2MASS-J11582681-775 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A 4450 G 2MASS-J11582681-775 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A 4450 G 18363( 2) - 24-Aug-2026 10:15:33 - [ 69] Visit: 36 (2MASS-J11582681-7754450 - 3STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M3 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1158 STIS/CCD ACQ F28X50LP MIRROR 1 0.5 S (0.5 2681-775445 S) 0 Comments: SNR=150 with 0.4104s, ETC 2367405 Saturates in 6.80s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1158 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1930, WAVECAL=NO 1 2322 S 2681-775445 -MAMA G (2322 S) 0 Comments: 6300s gives SNR = 4.9 at 2200A, ETC 2367463. Will bin spectrum by factor of 1.1 to reach SNR=5. BUFFER-TIME = 2, 412.41 * 4/5 = 1930 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 2MASS-J1158 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1922, WAVECAL=NO 1 2700 S 2681-775445 -MAMA G (2700 S) 0 Comments: 6300s gives SNR = 4.9 at 2200A, ETC 2367463. Will bin spectrum by factor of 1.1 to reach SNR=5. BUFFER-TIME = 2, 412.41 * 4/5 = 1930 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J1158 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1930, WAVECAL=NO 1 1646 S 2681-775445 -MAMA G (1646 S) 0 Comments: 6300s gives SNR = 4.9 at 2200A, ETC 2367463. Will bin spectrum by factor of 1.1 to reach SNR=5. BUFFER-TIME = 2, 412.41 * 4/5 = 1930 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 70] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 2MASS-J1158 STIS/CCD ACCUM 52X2E1 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 135 S (135 2681-775445 S) 0 Comments: 135s exposure gives SNR = 40, ETC 2367472. Total counts 2, 520.48, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 10 2MASS-J1158 STIS/CCD ACCUM 52X2E1 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 62 S (62 2681-775445 S) 0 Comments: 62s exposure gives SNR = 40, ETC 2367471. Total counts 2, 466.18, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J11582681-775 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 4450 2MASS-J11582681-775 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A 4450 -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 2MASS-J11582681-775 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A 4450 -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 2MASS-J11582681-775 6 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 3 N/A 4450 -MAMA G WAVE 7 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 3 N/A -MAMA 18363( 2) - 24-Aug-2026 10:15:33 - [ 71] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ WAVE 8 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 3 N/A 2MASS-J11582681-775 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 1 3 N/A 4450 2MASS-J11582681-775 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 2 3 N/A 4450 2MASS-J11582681-775 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 1 3 N/A 4450 2MASS-J11582681-775 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 2 3 N/A 4450 WAVE 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 3 N/A CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 3 N/A CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 3 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 72] Visit: 37 (TWA-15A - 2COS) Visit Requirements: GROUP 37, 38, 39 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M3 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-15A COS/NUV ACQ/IMA PSA MIRRORA 1 19 S (19 GE S) Comments: SNR = 30 in 17.3137s, ETC 2367415 Brightest Pixel (single exposure) = 7.230 counts/s Count rate entire detector = 1, 144.394 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-15A COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1077 S G BUFFER-TIME=11547 (1077 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 3 TWA-15A COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1078 S G BUFFER-TIME=11547 (1078 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 4 TWA-15A COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1231 S G BUFFER-TIME=11547 (1231 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-15A COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1231 S G BUFFER-TIME=11547 (1231 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 18363( 2) - 24-Aug-2026 10:15:33 - [ 73] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-15A 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE TWA-15A 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G TWA-15A 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G TWA-15A 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G TWA-15A 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 74] Visit: 38 (TWA-15B - 2COS) Visit Requirements: GROUP 38, 37, 39 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M3.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-15B COS/NUV ACQ/IMA PSA MIRRORA 1 19 S (19 GE S) Comments: SNR = 30 in 17.3137s, ETC 2367415 Brightest Pixel (single exposure) = 7.230 counts/s Count rate entire detector = 1, 144.394 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-15B COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1077 S G BUFFER-TIME=11547 (1077 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 3 TWA-15B COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1078 S G BUFFER-TIME=11547 (1078 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 4 TWA-15B COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1231 S G BUFFER-TIME=11547 (1231 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 ------------------------------------------------------------------------------------------------------------------------------------ 5 TWA-15B COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1231 S G BUFFER-TIME=11547 (1231 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=25.0 at 1238.8A, ETC 2367466 Buffer time = 17321 * 2/3 = 11547 18363( 2) - 24-Aug-2026 10:15:33 - [ 75] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-15B 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE TWA-15B 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G TWA-15B 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G TWA-15B 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G TWA-15B 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 76] Visit: 39 (TWA-15A+B - 3STIS) Visit Requirements: On Hold Comments: Additional Comments: ***PROBLEM: NO ORIENT AVAILABILITY IN ROLL REPORT*** UV ETC Template is an M3 WTTS RECX 6 M3+M3.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TWA-15A+B STIS/CCD ACQ F28X50LP MIRROR 1 0.5 S (0.5 S) Comments: Coordinates set to acquire TWA 15 A. TWA 15 A: SNR=150 with 0.5066s, ETC 2367417. Saturates in 8.33s TWA 15 B: SNR=150 with 0.4524s, ETC 2367412. Saturates in 7.48s ------------------------------------------------------------------------------------------------------------------------------------ 2 TWA-15A+B STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1927, WAVECAL=NO 1 2181 S -MAMA G (2181 S) Comments: TWA 15 A: 6245s gives SNR = 5.1 at 2200A, ETC 2367482. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 408.84 * 4/5 = 1927 TWA 15 B: 6245s gives SNR = 4.0 at 2200A, ETC 2367483. Will bin spectrum by factor of 1.6 to reach SNR=5. BUFFER-TIME = 2, 426.54 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 TWA-15A+B STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1927, WAVECAL=NO 1 2559 S -MAMA G (2559 S) Comments: TWA 15 A: 6245s gives SNR = 5.1 at 2200A, ETC 2367482. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 408.84 * 4/5 = 1927 TWA 15 B: 6245s gives SNR = 4.0 at 2200A, ETC 2367483. Will bin spectrum by factor of 1.6 to reach SNR=5. BUFFER-TIME = 2, 426.54 * 4/5 = 1941 18363( 2) - 24-Aug-2026 10:15:33 - [ 77] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 TWA-15A+B STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1927, WAVECAL=NO 1 1497 S -MAMA G (1497 S) Comments: TWA 15 A: 6245s gives SNR = 5.1 at 2200A, ETC 2367482. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 408.84 * 4/5 = 1927 TWA 15 B: 6245s gives SNR = 4.0 at 2200A, ETC 2367483. Will bin spectrum by factor of 1.6 to reach SNR=5. BUFFER-TIME = 2, 426.54 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TWA-15A+B STIS/CCD ACCUM 52X2E1 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 146 S (146 S) Comments: TWA 15 A: 146s exposure gives SNR = 40, ETC 2367476. Total counts 2, 529.33, so using E1 pseudoaperture. TWA 15 B: 132s exposure gives SNR = 40, ETC 2367474. Total counts 2, 518.52, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 10 TWA-15A+B STIS/CCD ACCUM 52X2E1 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 60 S (60 S) Comments: TWA 15 A: 60s exposure gives SNR = 40, ETC 2367475. Total counts 2, 464.49, so using E1 pseudoaperture. TWA 15 B: 55s exposure gives SNR = 40, ETC 2367473. Total counts 2, 460.78, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 78] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 12 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TWA-15A+B 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TWA-15A+B 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA TWA-15A+B 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA TWA-15A+B 6 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 3 N/A -MAMA G WAVE 7 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 3 N/A -MAMA WAVE 8 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 3 N/A TWA-15A+B 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 1 3 N/A TWA-15A+B 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 2 3 N/A TWA-15A+B 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 1 3 N/A TWA-15A+B 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 2 3 N/A WAVE 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 3 N/A CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 3 N/A CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 3 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 79] Visit: 3C (LT-LUP - COS) Visit Requirements: GROUP 3C, 3S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LT-LUP COS/NUV ACQ/IMA PSA MIRRORB 1 17 S (17 GE S) Comments: SNR = 30 in 16s, ETC 2367096 Brightest Pixel (single exposure) = 7.8 counts/s Count rate entire detector = 1, 175 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 LT-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10199, FP-POS=ALL, 1 481 S G LIFETIME-POS=LP11 (1924 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2131s, ETC 2367099 Expected SNR = 10 at 1238.8A (per resolution element) in 738s, ETC 2367101 1924s total exposure time gives expected SNR=16 at 1238.8A, ETC 2367102 Buffer time = 15, 298 * 2/3 = 10199 Brightest Pixel (single exposure) (at 1335.75 A) = 0.012 counts/s (C II), ETC 2367103 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LT-LUP 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 18363( 2) - 24-Aug-2026 10:15:33 - [ 80] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G LT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G LT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G LT-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 81] Visit: 3S (LT-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LT-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.05s, ETC 2367135 Saturates in 0.7s ------------------------------------------------------------------------------------------------------------------------------------ 2 LT-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1314, WAVECAL=NO 1 1281 S -MAMA G (1281 S) Comments: 1281s gives SNR = 8.7 at 2200A, ETC 2367138 BUFFER-TIME = 1642 * 4/5 = 1314 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 LT-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 13 S (13 S) Comments: Saturation in 142s 12.7s exposure gives SNR = 100, run number 2367137. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 LT-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 8 S (8 S) Comments: Saturation in 71s 8.2s exposure gives SNR = 100, run number 2367136. Total counts > 9000, so no need for E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 82] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ LT-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A LT-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A LT-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A LT-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A LT-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A LT-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 83] Visit: 40 (2MASS-J04292071+2633406 - 2COS) Visit Requirements: GROUP 40, 41 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J0429 COS/NUV ACQ/IMA PSA MIRRORA 1 24 S (24 2071+263340 GE S) 6 Comments: SNR = 30 in 22.9107s, ETC 2367421 Brightest Pixel (single exposure) = 5.468 counts/s Count rate entire detector = 1, 131.695 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J0429 COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1058 S 2071+263340 G BUFFER-TIME=11579 (1058 S) 6 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=22.1 at 1238.8A, ETC 2367467 Buffer time = 17369 * 2/3 = 11579 ------------------------------------------------------------------------------------------------------------------------------------ 3 2MASS-J0429 COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1059 S 2071+263340 G BUFFER-TIME=11579 (1059 S) 6 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=22.1 at 1238.8A, ETC 2367467 Buffer time = 17369 * 2/3 = 11579 ------------------------------------------------------------------------------------------------------------------------------------ 4 2MASS-J0429 COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1217 S 2071+263340 G BUFFER-TIME=11579 (1217 S) 6 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=22.1 at 1238.8A, ETC 2367467 Buffer time = 17369 * 2/3 = 11579 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 84] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 2MASS-J0429 COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1217 S 2071+263340 G BUFFER-TIME=11579 (1217 S) 6 Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=22.1 at 1238.8A, ETC 2367467 Buffer time = 17369 * 2/3 = 11579 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04292071+263 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 3406 GE 2MASS-J04292071+263 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A 3406 G 2MASS-J04292071+263 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A 3406 G 2MASS-J04292071+263 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A 3406 G 2MASS-J04292071+263 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A 3406 G 18363( 2) - 24-Aug-2026 10:15:33 - [ 85] Visit: 41 (2MASS-J04292071+2633406 - 4STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J0429 STIS/CCD ACQ F28X50LP MIRROR 1 0.8 S (0.8 2071+263340 S) 6 Comments: SNR=150 with 0.4671s, ETC 2367436 Saturates in 8.06s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J0429 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 2153 S 2071+263340 -MAMA G (2153 S) 6 Comments: 8590s gives SNR = 4.7 at 2200A, ETC 2367485. Will bin spectrum by factor of 1.2 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 2MASS-J0429 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 2531 S 2071+263340 -MAMA G (2531 S) 6 Comments: 8590s gives SNR = 4.7 at 2200A, ETC 2367485. Will bin spectrum by factor of 1.2 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J0429 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 2531 S 2071+263340 -MAMA G (2531 S) 6 Comments: 8590s gives SNR = 4.7 at 2200A, ETC 2367485. Will bin spectrum by factor of 1.2 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 86] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 2MASS-J0429 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1941, WAVECAL=NO 1 1407 S 2071+263340 -MAMA G (1407 S) 6 Comments: 8590s gives SNR = 4.7 at 2200A, ETC 2367485. Will bin spectrum by factor of 1.2 to reach SNR=5. BUFFER-TIME = 2, 426.65 * 4/5 = 1941 ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 2MASS-J0429 STIS/CCD ACCUM 52X2E1 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 187 S (187 2071+263340 S) 6 Comments: 187s exposure gives SNR = 40, ETC 2367479. Total counts 2, 560.06, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 12 2MASS-J0429 STIS/CCD ACCUM 52X2E1 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 80 S (80 2071+263340 S) 6 Comments: 80s exposure gives SNR = 40, ETC 2367477. Total counts 2, 479.56, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04292071+263 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3406 18363( 2) - 24-Aug-2026 10:15:33 - [ 87] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04292071+263 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A 3406 -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 2MASS-J04292071+263 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A 3406 -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 2MASS-J04292071+263 6 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 3 N/A 3406 -MAMA G WAVE 7 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 3 N/A -MAMA 2MASS-J04292071+263 8 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 4 N/A 3406 -MAMA G WAVE 9 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 4 N/A -MAMA WAVE 10 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 4 N/A 2MASS-J04292071+263 11 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 1 4 N/A 3406 2MASS-J04292071+263 11 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 2 4 N/A 3406 2MASS-J04292071+263 12 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 1 4 N/A 3406 2MASS-J04292071+263 12 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 2 4 N/A 3406 WAVE 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 4 N/A CCDFLAT 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 4 N/A CCDFLAT 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 4 N/A CCDFLAT 15 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 4 N/A CCDFLAT 15 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 4 N/A CCDFLAT 16 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 4 N/A CCDFLAT 16 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 4 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 88] Visit: 42 (SZ-121 - 2COS) Visit Requirements: GROUP 42, 43 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SZ-121 COS/NUV ACQ/IMA PSA MIRRORA 1 16 S (16 GE S) Comments: SNR = 30 in 14.178s, ETC 2367427 Brightest Pixel (single exposure) = 8.826 counts/s Count rate entire detector = 1, 155.890 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 SZ-121 COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1071 S G BUFFER-TIME=11533 (1071 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=18.1 at 1238.8A, ETC 2367468 Buffer time = 17300 * 2/3 = 11533 ------------------------------------------------------------------------------------------------------------------------------------ 3 SZ-121 COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1071 S G BUFFER-TIME=11533 (1071 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=18.1 at 1238.8A, ETC 2367468 Buffer time = 17300 * 2/3 = 11533 ------------------------------------------------------------------------------------------------------------------------------------ 4 SZ-121 COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1222 S G BUFFER-TIME=11533 (1222 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=18.1 at 1238.8A, ETC 2367468 Buffer time = 17300 * 2/3 = 11533 ------------------------------------------------------------------------------------------------------------------------------------ 5 SZ-121 COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1221 S G BUFFER-TIME=11533 (1221 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=18.1 at 1238.8A, ETC 2367468 Buffer time = 17300 * 2/3 = 11533 18363( 2) - 24-Aug-2026 10:15:33 - [ 89] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SZ-121 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SZ-121 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G SZ-121 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G SZ-121 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G SZ-121 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 90] Visit: 43 (SZ-121 - 3STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M4 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SZ-121 STIS/CCD ACQ F28X50LP MIRROR 1 0.5 S (0.5 S) Comments: SNR=150 with 0.2591s, ETC 2367429 Saturates in 4.47s ------------------------------------------------------------------------------------------------------------------------------------ 2 SZ-121 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1916, WAVECAL=NO 1 2162 S -MAMA G (2162 S) Comments: 6300s gives SNR = 5.9 at 2200A, ETC 2367486. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 394.90 * 4/5 = 1916 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 SZ-121 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1916, WAVECAL=NO 1 2540 S -MAMA G (2540 S) Comments: 6300s gives SNR = 5.9 at 2200A, ETC 2367486. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 394.90 * 4/5 = 1916 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 SZ-121 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1916, WAVECAL=NO 1 1518 S -MAMA G (1518 S) Comments: 6300s gives SNR = 5.9 at 2200A, ETC 2367486. Exceeds SNR=5 goal; no binning required. BUFFER-TIME = 2, 394.90 * 4/5 = 1916 ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 91] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 9 SZ-121 STIS/CCD ACCUM 52X2E1 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 115 S (115 S) Comments: 115s exposure gives SNR = 40, ETC 2367470. Total counts 2, 505.91, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 10 SZ-121 STIS/CCD ACCUM 52X2E1 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 49 S (49 S) Comments: 49s exposure gives SNR = 40, ETC 2367478. Total counts 2, 456.43, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SZ-121 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A SZ-121 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA SZ-121 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A -MAMA G WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA SZ-121 6 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 3 N/A -MAMA G WAVE 7 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 3 N/A -MAMA WAVE 8 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 3 N/A SZ-121 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 1 3 N/A SZ-121 9 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 2 3 N/A SZ-121 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 1 3 N/A SZ-121 10 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 2 3 N/A WAVE 11 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 3 N/A CCDFLAT 12 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 3 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 92] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 3 N/A CCDFLAT 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 3 N/A CCDFLAT 14 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 3 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 93] Visit: 44 (V927Tau - 2COS) Visit Requirements: GROUP 44, 45 WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V927-TAU COS/NUV ACQ/IMA PSA MIRRORA 1 28 S (28 GE S) Comments: SNR = 30 in 25.5957s, ETC 2367433 Brightest Pixel (single exposure) = 4.896 counts/s Count rate entire detector = 1, 127.574 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 V927-TAU COS/FUV TIME-TA PSA G140L 1105 FP-POS=1, LIFETIME-POS=LP11, 1 1052 S G BUFFER-TIME=11593 (1052 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=17.9 at 1238.8A, ETC 2367469 Buffer time = 17389 * 2/3 = 11593 ------------------------------------------------------------------------------------------------------------------------------------ 3 V927-TAU COS/FUV TIME-TA PSA G140L 1105 FP-POS=2, LIFETIME-POS=LP11, 1 1053 S G BUFFER-TIME=11593 (1053 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=17.9 at 1238.8A, ETC 2367469 Buffer time = 17389 * 2/3 = 11593 ------------------------------------------------------------------------------------------------------------------------------------ 4 V927-TAU COS/FUV TIME-TA PSA G140L 1105 FP-POS=3, LIFETIME-POS=LP11, 1 1215 S G BUFFER-TIME=11593 (1215 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=17.9 at 1238.8A, ETC 2367469 Buffer time = 17389 * 2/3 = 11593 ------------------------------------------------------------------------------------------------------------------------------------ 5 V927-TAU COS/FUV TIME-TA PSA G140L 1105 FP-POS=4, LIFETIME-POS=LP11, 1 1215 S G BUFFER-TIME=11593 (1215 S) Comments: 4889s total exposure time (2 COS orbits, 4 FP-POS) gives SNR=17.9 at 1238.8A, ETC 2367469 Buffer time = 17389 * 2/3 = 11593 18363( 2) - 24-Aug-2026 10:15:33 - [ 94] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V927-TAU 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE V927-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G V927-TAU 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G V927-TAU 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G V927-TAU 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [ 95] Visit: 45 (V927Tau - 4STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is an M3 WTTS RECX 6 M5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V927-TAU STIS/CCD ACQ F28X50LP MIRROR 1 0.8 S (0.8 S) Comments: SNR=150 with 0.4671s, ETC 2367436 Saturates in 8.06s ------------------------------------------------------------------------------------------------------------------------------------ 2 V927-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1946, WAVECAL=NO 1 2149 S -MAMA G (2149 S) Comments: 8574s gives SNR = 4.2 at 2200A, ETC 2367484. Will bin spectrum by factor of 1.4 to reach SNR=5. BUFFER-TIME = 2, 432.14 * 4/5 = 1946 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V927-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1946, WAVECAL=NO 1 2527 S -MAMA G (2527 S) Comments: 8574s gives SNR = 4.2 at 2200A, ETC 2367484. Will bin spectrum by factor of 1.4 to reach SNR=5. BUFFER-TIME = 2, 432.14 * 4/5 = 1946 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 V927-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1946, WAVECAL=NO 1 2527 S -MAMA G (2527 S) Comments: 8574s gives SNR = 4.2 at 2200A, ETC 2367484. Will bin spectrum by factor of 1.4 to reach SNR=5. BUFFER-TIME = 2, 432.14 * 4/5 = 1946 ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 96] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 V927-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1946, WAVECAL=NO 1 1371 S -MAMA G (1371 S) Comments: 8574s gives SNR = 4.2 at 2200A, ETC 2367484. Will bin spectrum by factor of 1.4 to reach SNR=5. BUFFER-TIME = 2, 432.14 * 4/5 = 1946 ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 V927-TAU STIS/CCD ACCUM 52X2E1 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 210 S (210 S) Comments: 210s exposure gives SNR = 40, ETC 2367481. Total counts 2, 576.81, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 12 V927-TAU STIS/CCD ACCUM 52X2E1 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 89 S (89 S) Comments: 89s exposure gives SNR = 40, ETC 2367480. Total counts 2, 486.68, so using E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V927-TAU 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A V927-TAU 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA V927-TAU 4 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 2 N/A -MAMA G 18363( 2) - 24-Aug-2026 10:15:33 - [ 97] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA V927-TAU 6 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 3 N/A -MAMA G WAVE 7 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 3 N/A -MAMA V927-TAU 8 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 4 N/A -MAMA G WAVE 9 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 4 N/A -MAMA WAVE 10 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 4 N/A V927-TAU 11 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 1 4 N/A V927-TAU 11 STIS/CCD ACCUM 52X2E1 G430L 4300 none none none 2 4 N/A V927-TAU 12 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 1 4 N/A V927-TAU 12 STIS/CCD ACCUM 52X2E1 G750L 7751 none none none 2 4 N/A WAVE 13 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 4 N/A CCDFLAT 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 4 N/A CCDFLAT 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 4 N/A CCDFLAT 15 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 4 N/A CCDFLAT 15 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 4 N/A CCDFLAT 16 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 4 N/A CCDFLAT 16 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 4 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [ 98] Visit: 4C (2MASS-J16084340-2602168 - COS) Visit Requirements: GROUP 4C, 4S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1608 COS/NUV ACQ/IMA PSA MIRRORB 1 13 S (13 4340-260216 GE S) 8 Comments: SNR = 30 in 12s, ETC 2367104 Brightest Pixel (single exposure) = 10.7 counts/s Count rate entire detector = 1, 205 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1608 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=9731, FP-POS=ALL, 1 482 S 4340-260216 G LIFETIME-POS=LP11 (1928 S) 8 Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2448s, ETC 2367106 Expected SNR = 10 at 1238.8A (per resolution element) in 969s, ETC 2367107 1928s total exposure time gives expected SNR=14.1 at 1238.8A, ETC 2367108 Buffer time = 14, 597 * 2/3 = 9731 Brightest Pixel (single exposure) (at 1335.75 A) ~ 0.012 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [ 99] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J16084340-260 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 2168 GE 2MASS-J16084340-260 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A 2168 G 2MASS-J16084340-260 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A 2168 G 2MASS-J16084340-260 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A 2168 G 2MASS-J16084340-260 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A 2168 G 18363( 2) - 24-Aug-2026 10:15:33 - [100] Visit: 4S (2MASS-J16084340-2602168 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K0.5 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1608 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 4340-260216 S) 8 Comments: SNR=150 with 0.04s, ETC 2367139 Saturates in 0.5s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1608 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1162, WAVECAL=NO 1 1281 S 4340-260216 -MAMA G (1281 S) 8 Comments: 1281s gives SNR = 10.5 at 2200A, ETC 2367142 BUFFER-TIME = 1452 * 4/5 = 1162 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 2MASS-J1608 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 10 S (10 4340-260216 S) 8 Comments: Saturation in 109s 9.5s exposure gives SNR = 100, run number 2367141. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [101] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J1608 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 7 S (7 S) 4340-260216 8 Comments: Saturation in 56s 6.4s exposure gives SNR = 100, run number 2367140. Total counts > 9000, so no need for E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J16084340-260 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 2168 2MASS-J16084340-260 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A 2168 -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A 2MASS-J16084340-260 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A 2168 2MASS-J16084340-260 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A 2168 2MASS-J16084340-260 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A 2168 2MASS-J16084340-260 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A 2168 WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [102] Visit: 5C (V1354-TAU - COS) Visit Requirements: GROUP 5C, 5S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K1 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V1354-TAU COS/NUV ACQ/IMA PSA MIRRORB 1 25 S (25 GE S) Comments: SNR = 30 in 24s, ETC 2367109 Brightest Pixel (single exposure) = 5.2 counts/s Count rate entire detector = 1, 147 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 V1354-TAU COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10651, FP-POS=ALL, 1 475 S G LIFETIME-POS=LP11 (1900 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 2560s, ETC 2367110 Expected SNR = 10 at 1238.8A (per resolution element) in 848s, ETC 2367111 1900s total exposure time gives expected SNR=15 at 1238.8A, ETC 2367112 Buffer time = 15, 977 * 2/3 = 10651 Brightest Pixel (single exposure) (at 1335.75 A) ~ 0.012 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V1354-TAU 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 18363( 2) - 24-Aug-2026 10:15:33 - [103] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V1354-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G V1354-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G V1354-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G V1354-TAU 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [104] Visit: 5S (V1354-TAU - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K1 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V1354-TAU STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.07s, ETC 2367147 Saturates in 1s ------------------------------------------------------------------------------------------------------------------------------------ 2 V1354-TAU STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1482, WAVECAL=NO 1 1263 S -MAMA G (1263 S) Comments: 1263s gives SNR = 6.7, ETC 2367150 BUFFER-TIME = 1853 * 4/5 = 1482 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V1354-TAU STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 19 S (19 S) Comments: Saturation in 207s 18.7s exposure gives SNR = 100, run number 2367149. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 V1354-TAU STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 12 S (12 S) Comments: Saturation in 99s 12s exposure gives SNR = 100, run number 2367148. Total counts > 9000, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [105] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ V1354-TAU 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A V1354-TAU 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A V1354-TAU 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A V1354-TAU 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A V1354-TAU 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A V1354-TAU 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [106] Visit: 6C (2MASS-J16055065-2533136 - COS) Visit Requirements: GROUP 6C, 6S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K1 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1605 COS/NUV ACQ/IMA PSA MIRRORB 1 23 S (23 5065-253313 GE S) 6 Comments: SNR = 30 in 21.5s, ETC 2367113 Brightest Pixel (single exposure) = 5.8 counts/s Count rate entire detector = 1, 153 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1605 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=10557, FP-POS=ALL, 1 477 S 5065-253313 G LIFETIME-POS=LP11 (1908 S) 6 Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 1953s, ETC 2367114 Expected SNR = 10 at 1238.8A (per resolution element) in 632s, ETC 2367115 1908s total exposure time gives expected SNR=17 at 1238.8A, ETC 2367116 Buffer time = 15, 836 * 2/3 = 10557 Brightest Pixel (single exposure) (at 1335.75 A) ~ 0.012 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [107] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J16055065-253 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 3136 GE 2MASS-J16055065-253 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A 3136 G 2MASS-J16055065-253 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A 3136 G 2MASS-J16055065-253 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A 3136 G 2MASS-J16055065-253 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A 3136 G 18363( 2) - 24-Aug-2026 10:15:33 - [108] Visit: 6S (2MASS-J16055065-2533136 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K0 WTTS LkCa 19 K1 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 2MASS-J1605 STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 5065-253313 S) 6 Comments: SNR=150 with 0.06s, ETC 2367143 Saturates in 0.8s ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J1605 STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1446, WAVECAL=NO 1 1271 S 5065-253313 -MAMA G (1271 S) 6 Comments: 1271s gives SNR = 7, ETC 2367146 BUFFER-TIME = 1808 * 4/5 = 1446 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 2MASS-J1605 STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 17 S (17 5065-253313 S) 6 Comments: Saturation in 171s 16.4s exposure gives SNR = 100, run number 2367145. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 18363( 2) - 24-Aug-2026 10:15:33 - [109] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J1605 STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 10 S (10 5065-253313 S) 6 Comments: Saturation in 85s 9.8s exposure gives SNR = 100, run number 2367144. Total counts > 9000, so no need for E1 pseudoaperture. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J16055065-253 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3136 2MASS-J16055065-253 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A 3136 -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A 2MASS-J16055065-253 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A 3136 2MASS-J16055065-253 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A 3136 2MASS-J16055065-253 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A 3136 2MASS-J16055065-253 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A 3136 WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [110] Visit: 7C (MV-LUP - COS) Visit Requirements: GROUP 7C, 7S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K2 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MV-LUP COS/NUV ACQ/IMA PSA MIRRORB 1 28 S (28 GE S) Comments: SNR = 30 in 26.4s, ETC 2367151 Brightest Pixel (single exposure) = 4.7 counts/s Count rate entire detector = 1, 142 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 MV-LUP COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11379, FP-POS=ALL, 1 477 S G LIFETIME-POS=LP11 (1908 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 3695s, ETC 2367152 Expected SNR = 10 at 1238.8A (per resolution element) in 1113s, ETC 2367153 Final choice: 1908s total exposure time gives SNR=13 at 1238.8A, ETC 2367154 Buffer time = 17068 * 2/3 = 11379 Brightest Pixel (single exposure) (at 1335.75 A) = 0.005 counts/s (C II), ETC 2367155 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MV-LUP 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 18363( 2) - 24-Aug-2026 10:15:33 - [111] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MV-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G MV-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G MV-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G MV-LUP 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [112] Visit: 7S (MV-LUP - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K2 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MV-LUP STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 S) Comments: SNR=150 with 0.08s, ETC # 2367156 Saturates in 1.2s ------------------------------------------------------------------------------------------------------------------------------------ 2 MV-LUP STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1408, WAVECAL=NO 1 1270 S -MAMA G (1270 S) Comments: 1270s gives SNR = 8.6, ETC 2367158 BUFFER-TIME = 1753 * 4/5 = 1408 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MV-LUP STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 23 S (23 S) Comments: Saturation in 241s 23s exposure gives SNR = 100, run number 2367158. Total counts > 9000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 MV-LUP STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 14 S (14 S) Comments: Saturation in 118s 14s exposure gives SNR = 100, run number 2367157. Total counts > 9000, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [113] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ MV-LUP 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A MV-LUP 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A MV-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A MV-LUP 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A MV-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A MV-LUP 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [114] Visit: 8C (RX-J1608.9-3905 - COS) Visit Requirements: GROUP 8C, 8S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K2 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1608.9- COS/NUV ACQ/IMA PSA MIRRORB 1 18 S (18 3905 GE S) Comments: SNR = 30 in 18s, ETC 2367160 Brightest Pixel (single exposure) = 6.9 counts/s Count rate entire detector = 1, 166 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1608.9- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11252, FP-POS=ALL, 1 482 S 3905 G LIFETIME-POS=LP11 (1928 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 4467s, ETC 2367161 Expected SNR = 10 at 1238.8A (per resolution element) in 1410s, ETC 2367162 Final choice: 1928s total exposure time gives SNR=11.7 at 1238.8A, ETC 2367163 Buffer time = 16878 * 2/3 = 11252 Brightest Pixel (single exposure) (at 1335.75 A) ~ 0.005 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1608.9-3905 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE RX-J1608.9-3905 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [115] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1608.9-3905 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G RX-J1608.9-3905 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G RX-J1608.9-3905 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [116] Visit: 8S (RX-J1608.9-3905 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K2 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1608.9- STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 3905 S) Comments: SNR=150 with 0.05s, ETC 2367164 Saturates in 0.8s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1608.9- STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1234, WAVECAL=NO 1 1282 S 3905 -MAMA G (1282 S) Comments: 1282s gives SNR = 10.8, ETC 2367167 BUFFER-TIME = 1543 * 4/5 = 1234 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 RX-J1608.9- STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 16 S (16 3905 S) Comments: Saturation in 170s 16s exposure gives SNR = 100, run number 2367166. Total counts > 10927, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 RX-J1608.9- STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 10 S (10 3905 S) Comments: Saturation in 81s 10s exposure gives SNR = 100, run number 2367165. Total counts > 10922, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [117] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1608.9-3905 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A RX-J1608.9-3905 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A RX-J1608.9-3905 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A RX-J1608.9-3905 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A RX-J1608.9-3905 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A RX-J1608.9-3905 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [118] Visit: 9C (RX-J1547.7-4018 - COS) Visit Requirements: GROUP 9C, 9S WITHIN 1D On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K3 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1547.7- COS/NUV ACQ/IMA PSA MIRRORB 1 24 S (24 4018 GE S) Comments: SNR = 30 in 22.7s, ETC 2367170 Brightest Pixel (single exposure) = 5.5 counts/s Count rate entire detector = 1, 150 counts/s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1547.7- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=11330, FP-POS=ALL, 1 481 S 4018 G LIFETIME-POS=LP11 (1924 S) Comments: Goal: SNR=10 at NV doublet (1238.8A and 1242.8A, with typical flux ratio of 2:1). - Worst case uses the lowest-observed NV flux for WTTS, scaled to target distance. - Expected case uses mean observed NV flux for WTTS, scaled to target distance. Worst case SNR = 10 at 1238.8A (per resolution element) in 3302s, ETC 2367171 Expected SNR = 10 at 1238.8A (per resolution element) in 1000s, ETC 2367172 1924s total exposure time gives SNR=13.9 at 1238.8A, ETC 2367173 Buffer time = 16995 * 2/3 = 11330 Brightest Pixel (single exposure) (at 1335.75 A) ~ 0.005 counts/s (C II) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1547.7-4018 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE RX-J1547.7-4018 2 COS/FUV TIME-TA PSA G140L 1105 none none none 1 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [119] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1547.7-4018 2 COS/FUV TIME-TA PSA G140L 1105 none none none 2 1 N/A G RX-J1547.7-4018 2 COS/FUV TIME-TA PSA G140L 1105 none none none 3 1 N/A G RX-J1547.7-4018 2 COS/FUV TIME-TA PSA G140L 1105 none none none 4 1 N/A G 18363( 2) - 24-Aug-2026 10:15:33 - [120] Visit: 9S (RX-J1547.7-4018 - STIS) Visit Requirements: On Hold Comments: Additional Comments: UV ETC Template is a K2 WTTS RXJ0438.6+1546 K3 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RX-J1547.7- STIS/CCD ACQ F28X50LP MIRROR 1 0.2 S (0.2 4018 S) Comments: SNR=150 with 0.07s, ETC 2367174 Saturates in 1s ------------------------------------------------------------------------------------------------------------------------------------ 2 RX-J1547.7- STIS/NUV TIME-TA 52X2 G230L 2376 BUFFER-TIME=1336, WAVECAL=NO 1 1285 S 4018 -MAMA G (1285 S) Comments: 1285s gives SNR = 9.5, ETC 2367177 BUFFER-TIME = 1670 * 4/5 = 1336 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/CCD ACCUM 52X0.1 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 RX-J1547.7- STIS/CCD ACCUM 52X2 G430L 4300 CR-SPLIT=2, GAIN=1, WAVECAL=NO 1 20 S (20 4018 S) Comments: Saturation in 233s 20s exposure gives SNR = 100, run number 2367176. Total counts > 10000, so no need for E1 pseudoaperture. Exposure times give warning: Electrons per pixel due to background is less than the recommended threshold of 20 electrons to avoid poor charge transfer efficiency (CTE). We suggest you consider CTE mitigation strategies described in the STIS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 6 RX-J1547.7- STIS/CCD ACCUM 52X2 G750L 7751 WAVECAL=NO, CR-SPLIT=2, GAIN=1 1 12 S (12 4018 S) Comments: Saturation in 100s 12.3s exposure gives SNR = 100, run number 2367175. Total counts > 10000, so no need for E1 pseudoaperture. 18363( 2) - 24-Aug-2026 10:15:33 - [121] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/CCD ACCUM 52X0.1 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CCDFLAT STIS/CCD ACCUM 52X2 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ RX-J1547.7-4018 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A RX-J1547.7-4018 2 STIS/NUV TIME-TA 52X2 G230L 2376 none none none none 1 N/A -MAMA G WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA WAVE 4 STIS/CCD ACCUM 52X0.1 G430L 4300 none none none none 1 N/A RX-J1547.7-4018 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 1 1 N/A RX-J1547.7-4018 5 STIS/CCD ACCUM 52X2 G430L 4300 none none none 2 1 N/A RX-J1547.7-4018 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 1 1 N/A RX-J1547.7-4018 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none 2 1 N/A WAVE 7 STIS/CCD ACCUM 52X0.1 G750L 7751 none none none none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 1 N/A CCDFLAT 8 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 9 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A CCDFLAT 10 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A 18363( 2) - 24-Aug-2026 10:15:33 - [122] Summary Form for Proposal 18363 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.3X0.09, 52X0.1, 52X2, 52X2E1, F28X50LP, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=10199, BUFFER-TIME=10349, BUFFER-TIME=10557, BUFFER-TIME=10651, BUFFER-TIME=10891, BUFFER-TIME=10895, BUFFER-TIME=11047, BUFFER-TIME=11252, BUFFER-TIME=11290, BUFFER-TIME=11321, BUFFER-TIME=11329, BUFFER-TIME=11330, BUFFER-TIME=11379, BUFFER-TIME=11383, BUFFER-TIME=11404, BUFFER-TIME=11437, BUFFER-TIME=11533, BUFFER-TIME=11547, BUFFER-TIME=11549, BUFFER-TIME=11565, BUFFER-TIME=11579, BUFFER-TIME=1158, BUFFER-TIME=11593, BUFFER-TIME=1162, BUFFER-TIME=11647, BUFFER-TIME=11648, BUFFER-TIME=1234, BUFFER-TIME=1314, BUFFER-TIME=1336, BUFFER-TIME=1366, BUFFER-TIME=1376, BUFFER-TIME=1408, BUFFER-TIME=1446, BUFFER-TIME=1482, BUFFER-TIME=1508, BUFFER-TIME=1708, BUFFER-TIME=1866, BUFFER-TIME=1882, BUFFER-TIME=1901, BUFFER-TIME=1907, BUFFER-TIME=1916, BUFFER-TIME=1917, BUFFER-TIME=1922, BUFFER-TIME=1927, BUFFER-TIME=1930, BUFFER-TIME=1938, BUFFER-TIME=1941, BUFFER-TIME=1946, BUFFER-TIME=1950, BUFFER-TIME=1951, BUFFER-TIME=9723, BUFFER-TIME=9731, CR-SPLIT=2, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, FP-POS=ALL, GAIN=1, LIFETIME-POS=LP11, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GROUP 10, 11 WITHIN 1D, GROUP 12, 13 WITHIN 1D, GROUP 14, 15 WITHIN 1D, GROUP 16, 17 WITHIN 1D, GROUP 18, 19 WITHIN 1D, GROUP 1C, 1S WITHIN 1D, GROUP 20, 21 WITHIN 1D, GROUP 22, 23 WITHIN 1D, GROUP 24, 25 WITHIN 1D, GROUP 26, 27 WITHIN 1D, GROUP 28, 29 WITHIN 1D, GROUP 2C, 2S WITHIN 1D, GROUP 30, 31 WITHIN 1D, GROUP 32, 33 WITHIN 1D, GROUP 35, 36 WITHIN 1D, GROUP 37, 38, 39 WITHIN 1D, GROUP 38, 37, 39 WITHIN 1D, GROUP 3C, 3S WITHIN 1D, GROUP 40, 41 WITHIN 1D, GROUP 42, 43 WITHIN 1D, GROUP 44, 45 WITHIN 1D, GROUP 4C, 4S WITHIN 1D, GROUP 5C, 5S WITHIN 1D, GROUP 6C, 6S WITHIN 1D, GROUP 7C, 7S WITHIN 1D, GROUP 8C, 8S WITHIN 1D, GROUP 9C, 9S WITHIN 1D, ORIENT 11.5D TO 13.5 D, ORIENT 191.5D TO 193.5 D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, G230L, G430L, G750L, MIRROR, MIRRORA, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names 2MASS-J04292071+2633406, 2MASS-J11582681-7754450, 2MASS-J15552621-3338232, 2MASS-J16055065-2533136, 2MASS-J16084340-2602168, CCDFLAT, LQ-LUP, LT-LUP, MS-LUP, MT-LUP, MU-LUP, MV-LUP, RX-J1538.6-3916, RX-J1543.1-3920, RX-J1547.7-4018, RX-J1608.9-3905, SZ-121, THA-15-43, TWA-13A+B, TWA-14, TWA-15A, TWA-15A+B, TWA-15B, TWA-25, TWA-6, TWA-9A, V1354-TAU, V826-TAU, V830-TAU, V927-TAU, WAVE ------------------------------------------------------------------------------------------------------------------------------------