16188( 2) - 30-Jun-2020 18:16:52 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16188 Version: 2 Check-in Time: 30-Jun-2020 18:16:52 STScI Edit Number: 0 Title Calibration of Scattered Light in STIS grating G230LB ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Guy Worthey Washington State University Y CoI: Xiang Shi Washington State University N ------------------------------------------------------------------------------------ Abstract This calibration proposal measures light scattered by the G230LB grating paired with the CCD detector on STIS. The improvement will have immediate impact on the fidelity of the Next Generation Spectral Library. The observational scheme is to observe three stars of differing temperature in two similar modes; CCD+G230LB and MAMA+G230L. Because the MAMA is mostly insensitive to red light, only the CCD spectra will show the scattered light problem. The scattered light will be modeled and applied to the NGSL. In addition, the dependence of scattered light on the position of the star relative to the centerline of the slit at the time of exposure will be measured. ------------------------------------------------------------------------------------ Observations Description ------------------------ Three bright stars previously observed as part of the NGSL project are chosen at roughly K0, K5, and M1 spectral types. Except for the quantities we intentionally vary, the observing configuration generally mimics the NGSL, in particular, the 0.2 arcsec slit width and the E1 spatial observing position for the CCD spectral observations through G230LB. The observing cadence is two orbits per star, one with MAMA/G230L, the other with CCD/G230LB. Unlike NGSL, we perform the normal peakup to center the star in the slit. After a cr-split exposure, we dither redward and blueward in 0.05 arcsec steps to gauge the impact of off-center object positioning on the properties of the scattered light. The result is 3 stars $\times$ 2 detectors $\times$ 5 or 7 positions within the slit, which should allow a clean calibration of the temperature dependence and slit-position dependendence of the scattered light in G230LB. ------------------------------------------------------------------------------------ 16188( 2) - 30-Jun-2020 18:16:52 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 HD102212 STAR, M III-I RA=11H45M51.5596S, J2000 V = 4.04 +/- 0.03 U = 7.32, K = 0.07 DEC=+06D31'45.74" Reference Frame: ICRS Extended: NO Comments: Long period variable star with variation +/- 0.03 mag. 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 -0.0012722522192355388 -0.18156 0.0111 ------------------------------------------------------------------------------------------------------------------------------------ 4 BD+41D3306 STAR, K V-IV RA=19H19M0.5488S, J2000 V = 8.86 U=10.01, K=6.703 DEC=+41D38'4.58" Reference Frame: ICRS Comments: Rotation detected from star spots, period 49.40 days. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.00844548975994939 -0.632202 0.0274137 ------------------------------------------------------------------------------------------------------------------------------------ 6 HD013520 STAR, K III-I RA=02H13M13.3222S, J2000 V = 4.826 DEC=+44D13'53.93" Reference Frame: ICRS Comments: K4 III star Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.0019445692974207095 -0.01446 0.0052634 ------------------------------------------------------------------------------------------------------------------------------------ 16188( 2) - 30-Jun-2020 18:16:52 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose OTHER Number_Of_Points 5 Point_Spacing 0.05 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose OTHER Number_Of_Points 7 Point_Spacing 0.05 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 16188( 2) - 30-Jun-2020 18:16:52 - [ 4] Visit: 01 (HD 102212) Visit Requirements: PCS MODE FINE On Hold Comments: Additional Comments: Bright M1 III star 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 HD102212 STIS/CCD ACQ F25ND5 MIRROR 1 0.5 S (0.5 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD102212 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 1 40 S (40 K S) Comments: This target is too bright for a white light peakup. Target will be considerably brighter at the detector than the ETC predicts due to scattered red light in the grism. Science exposures will be through the 52 x 0.2" E1 aperture. Slit-to-slit pointing shift jitter is 0.005". ------------------------------------------------------------------------------------------------------------------------------------ 3 HD102212 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 120.0 S PATTERN 1 3 (600 S) Comments: Science exposures, dithered +/- 0.05 arcsec from slit center. ------------------------------------------------------------------------------------------------------------------------------------ 4 HD102212 STIS/NUV ACCUM 52X0.2 G230L 2376 1 180 S PATTERN 2 4 -MAMA (1260 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD102212 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A HD102212 2 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 none none none none 1 N/A K HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 1 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 2 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 1 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 2 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 1 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 2 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 1 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 2 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 1 1 N/A HD102212 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 2 1 N/A 16188( 2) - 30-Jun-2020 18:16:52 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 1 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 2 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 3 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 4 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 5 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 6 none none none 2 N/A -MAMA HD102212 4 STIS/NUV ACCUM 52X0.2 G230L 2376 7 none none none 2 N/A -MAMA 16188( 2) - 30-Jun-2020 18:16:52 - [ 6] Visit: 02 (HD 013520) Visit Requirements: PCS MODE FINE On Hold Comments: Additional Comments: Bright K4 III star 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 HD013520 STIS/CCD ACQ F25ND5 MIRROR 1 2.0 S (2 S) Comments: Bright K5 giant. ------------------------------------------------------------------------------------------------------------------------------------ 2 HD013520 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 1 60 S (60 K S) Comments: This target is too bright for a white light peakup. Target will be somewhat brighter at the detector than the ETC predicts due to scattered red light in the grism. Science exposures will be through the 52 x 0.2" E1 aperture. Slit-to-slit pointing shift jitter is 0.005". ------------------------------------------------------------------------------------------------------------------------------------ 3 HD013520 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 160.0 S PATTERN 1 3 (800 S) Comments: Science exposures, dithered from slit center. ------------------------------------------------------------------------------------------------------------------------------------ 4 HD013520 STIS/NUV ACCUM 52X0.2 G230L 2376 1 300 S PATTERN 2 4 -MAMA (2100 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD013520 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A HD013520 2 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 none none none none 1 N/A K HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 1 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 2 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 1 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 2 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 1 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 2 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 1 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 2 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 1 1 N/A HD013520 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 2 1 N/A 16188( 2) - 30-Jun-2020 18:16:52 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 1 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 2 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 3 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 4 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 5 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 6 none none none 2 N/A -MAMA HD013520 4 STIS/NUV ACCUM 52X0.2 G230L 2376 7 none none none 2 N/A -MAMA 16188( 2) - 30-Jun-2020 18:16:52 - [ 8] Visit: 03 (BD +41 3306) Visit Requirements: PCS MODE FINE On Hold Comments: Additional Comments: K0 V star 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 BD+41D3306 STIS/CCD ACQ F25ND3 MIRROR 1 1.0 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 BD+41D3306 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 1 30.0 S (30 K S) Comments: This target is (borderline) too bright for a white light peakup. Science exposures will be through the 52 x 0.2" E1 aperture. Slit-to-slit pointing shift jitter is 0.005". ------------------------------------------------------------------------------------------------------------------------------------ 3 BD+41D3306 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 240.0 S PATTERN 1 3 (1200 S) Comments: Science exposures, dithered from slit center ------------------------------------------------------------------------------------------------------------------------------------ 4 BD+41D3306 STIS/NUV ACCUM 52X0.2 G230L 2376 1 300 S PATTERN 2 4 -MAMA (2100 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+41D3306 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A BD+41D3306 2 STIS/CCD ACQ/PEA 52X0.1E1 G230LB 2375 none none none none 1 N/A K BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 1 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 1 none none 2 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 1 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 2 none none 2 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 1 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 3 none none 2 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 1 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 4 none none 2 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 1 1 N/A BD+41D3306 3 STIS/CCD ACCUM 52X0.2E1 G230LB 2375 5 none none 2 1 N/A BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 1 none none none 2 N/A -MAMA BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 2 none none none 2 N/A -MAMA 16188( 2) - 30-Jun-2020 18:16:52 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 3 none none none 2 N/A -MAMA BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 4 none none none 2 N/A -MAMA BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 5 none none none 2 N/A -MAMA BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 6 none none none 2 N/A -MAMA BD+41D3306 4 STIS/NUV ACCUM 52X0.2 G230L 2376 7 none none none 2 N/A -MAMA 16188( 2) - 30-Jun-2020 18:16:52 - [ 10] Summary Form for Proposal 16188 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.1E1, 52X0.2, 52X0.2E1, F25ND3, F25ND5 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 3, PATTERN 2 4, PCS MODE FINE ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230L, G230LB, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names BD+41D3306, HD013520, HD102212 ------------------------------------------------------------------------------------------------------------------------------------