0 Assigned ID: 219 ----- Attempting Submission 1 (Thu Apr 04 16:53:40 GMT 2019) ----- HST Phase I Proposal 219 (fomalhaut.apt) successfully submitted. Receipt: # 219-1 ----- Attempting Submission 2 (Thu Apr 04 17:45:44 GMT 2019) ----- HST Phase I Proposal 219 (fomalhaut.apt) successfully submitted. Receipt: # 219-2 ----- Attempting Submission 3 (Thu Apr 04 18:19:30 GMT 2019) ----- HST Phase I Proposal 219 (fomalhaut.apt) successfully submitted. Receipt: # 219-3 ----- Attempting Submission 4 (Fri Apr 05 17:39:45 GMT 2019) ----- HST Phase I Proposal 219 (fomalhaut.apt) successfully submitted. Receipt: # 219-4 This target is not used in this proposal. Submission 1 comments: Our original plan was to use del Aqr as the PSF source for Fomalhaut. Based on observational data, it has a small mass binary component and therefore we switched our PSF to theta Peg. We request our PC, Beth Perillo, to schedule our observations in a way that Visit 1 and Visit 5 follow an observation that is close in coordinates to our science target to minimize thermal slewing. Submission 2 comments: We ask our PC to please verify the new rotation angles and whether visits 1-4 could be scheduled in October 2019 as they are schedulable in October 2020. Submission 3 comments: We have losened the restrictions for the absolute roll ranges for V1. This has opened up a 1 day observing window in November 2019. If our PC is able to schedule our observations that day, that would be great. If not, than the minimum value of absolute orientation for V1 (currently at 84 deg) can be lowered to 83 or 82 to allow the observations. Note: in that case we will like V2 to be reset to be at the new average orientation angle of V1 and V4. -1156676355 ----- Attempting Submission 1 (Tue Jul 16 20:48:37 GMT 2019) ----- ----- Attempting Submission 2 (Thu Aug 15 21:36:55 GMT 2019) ----- HST Phase II Proposal 15905 (GO15905_fomalhaut_phase2_v2.apt) successfully submitted. Receipt: # 15905-2 ----- Attempting Submission 3 (Fri Aug 16 16:23:31 GMT 2019) ----- Our original plan was to use del Aqr as the PSF source. We left it in our APT file for historical log. We are not using it in our observations. As we celebrate the discovery of thousands of exoplanets, we need to reflect on virtually all of them lying in planetary systems vastly different than our own. The initial architectures of planetary systems must reflect laws of physics and chemistry, such as the influence of H2O and CO ice lines. How do similar beginnings evolve into dissimilar ends? Answers demand a detailed understanding of all the constituents of planetary systems, of which debris disks are the most readily studied. The most favorable opportunity lies with Fomalhaut. Not only is it the second-closest bright debris disk system (tied with Vega), but the level of observable details is aided by the high luminosity of the star, resulting in disk features lying 4 times further out than they would around a solar-type star at the equivalent stellar insolation. HST imaging, space IR missions, and groundbased radio observations have resolved the outer Kuiper-belt-analog of the system exquisitely well. However, evolution in these outer orbits proceeds slowly. We must bore in on the regions inside the snow line to further study planetary system evolution. Due to the technical challenges, there are no resolved images of these inner regions around any stars (other than the Sun). We propose to spatially resolve this domain of the Fomalhaut system, one of only three where this is possible with current technology. We will: (1) test whether there is an Asteroid-analog belt near Fomalhaut's H2O iceline; (2) search for the influence of unseen planets; and (3) constrain grain properties, providing new inputs to debris disk theory. Overview =========================== We will observe Fomalhaut and its PSF calibrator theta Peg with our STIS coronagraphic program. The program uses 8 orbits, of which 6 will be used to take data of our target and 2 to observe the calibrator. Our PSF calibrator, theta Peg, has been used in a single program (GO10390) as a calibrator for Fomalhaut. It is a single star, without IR thermal excess, and spatially relatively close to the star in the sky (~ 37 deg), although not ideally close. It is the closest best matching non-binary star however. Most importantly, the Delta(B-V) between the two stars is only around 0.02 mag. To minimize thermal slew at the beginning of our observing sequences (V1 and V5), we request our PC to schedule our observing sequences following an observing program relatively close in the sky (within 30 deg), ideally further minimized. Exposure details =========================== Guide Star Acq: We require pointing and roll control with 2-FGS guiding. Single-FGS guiding does not offer sufficient target position stability for coronagraphy. Each visit (after its Guide Star acquisition) begins with a mode-2 target acquisition and is followed by a sequence of exposures (by CR-SPLIT) at the WedgeA0.6 position. Target Acquisitions: We expose our TA images to a SNR of well over 100 using the STIS ETC. We also use the F25ND3 filtered images to photometrically obtain target:PSF template brightness ratios in the broad STIS passband. For this reason, we will use ND5 for the PSF calibrator as well, even though we could save ~ 10 s by using ND3. The STIS Target Acquisition ETC was used to determine the eposure times for all acquisition images. Further calculations are given in the exposure comments. Exposure times: The exposure times are designed to reach ~65% of full-well depth (20,000 cts) with the minimal 0.1 s exposure time. The next increment of 0.2 s would result in saturation. The exposure times are based on prior observations of another early-type star, Beta Pic at WA0.6 (GO 12551), reaching a well depth of 19,000 cts in 1.2 s. Beta Pic is 12.02x brighter in V-band, therefore the 0.1 s exposure should be ideal for Fomalhaut. Theta Peg is 9x fainter than Fomalhaut, therefore we will take 1.1 s exposures of it, reaching a well depth of ~ 23,000 cts (~ 75%). We could go to 1.2 s exposures, but we would decrease our visibilit window and a more streched out exposure will not improve our reductions as Fomalhaut will be exposed to the same count level. The orbits are filled completely. We integrate 19x5 CR-SPLIT images for Fomalhaut and 18x5 CR-SPLIT positions for theta Peg. The data are read-out at SIZEAXIS=135 to reduce readout time and increase efficiency, since we are interested in the inner regions. Visits, links, and interlinked PSF observations =========================== Fomalhaut and its matched PSF star is observed in two "sets" of four single-orbit visits (V1-V4 and V5-V8). Three visits are used to observe the science target in each set (V1, V2, and V4 [for the second set V5, V6, V8]), and one (each) the PSF star [V3 and V7]. These four visits within each set must be executed in sequential, contiguous orbits (i.e., back to back with no interruptions except Earth occultation). The three science target visits in each set are at different RELATIVE orientation of *NOMINALLY* -30, 0, and +30 degrees from nominal roll, with the second science target observation at nominal roll. The 3rd orbit (visit) in each 4-visit set is of the PSF template star paired with the science target. The PSF template is relatively close in the sky to the science target (37 degrees). As a result we, anticipate that with scheduling of the second science orbit at nominal roll, the PSF calibration star will also be at or close to its nominal roll and usually these two orbits will have nearly the same celestial orientation angle. The first "repeated" orbit (V5) should be scheduled at either a +90 deg or -90 deg relative orientation from the first (V1). APT does not have the capability to specify allowable multiple (in this case two) relative orientations. Therefore, we advise our PC that although the parity of the first orbit in the second set's (V5) relative orientation was found schedulable by APT, if for some reason it turns out not to be, our PC may freely change the sign of this relative offset range from positive to negative (or vice versa). In doing so the signs on the relative orientations (and ranges if any) on the Visit V6 and V8 Orient Froms must also be changed in concert. Either positive or negative Orients From of appx |90| are acceptable on Visit V5, with corresponding sign changes on Visits V6 and V8. -------- Realtime Justification -------- We have no real-time requirments. ------ Calibration Justification ------- We ask for no SPECIAL calibrations for this proposal (and called none out in Phase 1). We did not because we ASSUME that STScI will acquire GAIN=4 (supported mode) bias, DARK, and flat-field frames (and derived hot/bad pixel maps) as part of their Cycle 27 calibration plan in support of approved Cycle 27 science programs. If this is NOT the case then we must obtain GAIN=4 calibration reference bias/dark data as part of our program using NON-POINTED (internal) orbits only. --------- Additional Comments ---------- None Our team consists of members with multiple years of experience observing and reducing HST data. The PI, Andras Gaspar, led the program that enabled the BAR5 coronagraphic position of STIS and has been involved with many other HST programs. Aside from working on HST observations, he has been primarily involved in modeling the collisional evolution of debris disks. As a member of the MIRI and NIRCAM/JWST instrument teams, he leads two GTO programs, one of which will observe the Fomalhaut system with MIRI. Co-I Glenn Schneider has been working on the HST program since the 80's. He was a project instrument scientist on the NICMOS project and has since PI-d multiple programs to observe debris disks using STIS (e.g. Schneider et al. 2014). Co-I Paul Kalas has observed the Fomalhaut system with ACS and STIS as well. Co-I George Rieke was the PI of MIPS aboard Spitzer and is the US Science Team lead of MIRI/JWST. He has multiple papers on Debris Disks and is an expert in the field. Co-I Kate Su is an expert on the warm belt excess of the Fomalhaut system, writing the seminal paper on the near-IR/mid-IR excess of the inner regions (Su et al. 2013). Co-I Nicholas Ballering is an expert on grain optical properties and HST data analysis (e.g., Ballering et al. 2016) Co-Is Charles Beichman and Marie Ygouf are leading a NIRCam GTO program to observe the Fomalhaut system. Co-I Jarron Leisenring is also a member of the NIRCam and MIRI GTO programs and has extensive experience with high contrast imaging. Planets and Planet Formation Solar System 6 false false false false false false false false SUPPORTED STAR A0-A3 V-IV DISK NO This object was generated by the targetselector and retrieved from the SIMBAD database. -ALF-PSA HD216956 J2000 J2000 STAR A0-A3 V-IV DISK NO This object was generated by the targetselector and retrieved from the SIMBAD database. -ALF-PSA HD216956 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO We are not using this object in our proposal anymore, just kept it in the target list for historical reasons. del Aqr seems to be a binary. This object was generated by the targetselector and retrieved from the SIMBAD database. GAIA source ID: 2404579569999907200 -DEL-AQR HD216627 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO This object was generated by the targetselector and retrieved from the SIMBAD database. GAIA DR2 #: 2720428303852169216 THETA-PEG HD210418 J2000 Bmag: 3.62 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 STIS/CCD Imaging Yes No WEDGEA0.6 1565971921777 Timing link suitability includes constraints ([02 After 01 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. We request Visit 1 and 5 to follow an observation that is less than 40 degrees away in coordinates (and minimized as much as possible) to decrease the effects of thermal slew. Our observations are high fidelity observations, resolving scattered light coronagraphically within the core of the PSF and therefore any thermal slew will greatly impact our data. 1605689881000 85.0 (Tic-Visit :proposal-id 15905 :visit-id "01" :proposal-version -1 :trans-version "20190514" :date "16-Aug-2019 09:12:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565972016364 Timing link suitability includes constraints ([02 After 01 by 0.0 to 0.1 days] [03 After 02 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1605695600000 69.4 (Tic-Visit :proposal-id 15905 :visit-id "02" :proposal-version -1 :trans-version "20190514" :date "16-Aug-2019 09:13:34.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565903215936 Timing link suitability includes constraints ([03 After 02 by 0.0 to 0.1 days] [04 After 03 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1605701341000 69.0 (Tic-Visit :proposal-id 15905 :visit-id "03" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 14:06:54.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 216448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2713 :al-overhead-at-end 0 :internal-dur-at-end 416 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) false 1 0 ETC gives 0.3 seconds for saturation and 0.012 s to reach S/N=100 with ND3 (STIS.ta.1368323) and 68 second for saturation and 2.5 s to reach S/N=100 with ND5 (STIS.ta.1368326). Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes 1565902708516 Timing link suitability includes constraints ([04 After 03 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1605707580000 55.55000000000001 (Tic-Visit :proposal-id 15905 :visit-id "04" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:26.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565902715673 Timing link suitability includes constraints ([06 After 05 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. We request Visit 1 and 5 to follow an observation that is less than 40 degrees away in coordinates (and minimized as much as possible) to decrease the effects of thermal slew. Our observations are high fidelity observations, resolving scattered light coronagraphically within the core of the PSF and therefore any thermal slew will greatly impact our data. 1598145855000 321.33000000000004 (Tic-Visit :proposal-id 15905 :visit-id "05" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565902722438 Timing link suitability includes constraints ([06 After 05 by 0.0 to 0.1 days] [07 After 06 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1598151809000 318.25 (Tic-Visit :proposal-id 15905 :visit-id "06" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565903222480 Timing link suitability includes constraints ([07 After 06 by 0.0 to 0.1 days] [08 After 07 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1598157127000 180.95712479225256 (Tic-Visit :proposal-id 15905 :visit-id "07" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 14:07:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 216448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2713 :al-overhead-at-end 0 :internal-dur-at-end 416 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) false 1 0 ETC gives 0.3 seconds for saturation and 0.012 s to reach S/N=100 with ND3 (STIS.ta.1368323) and 68 second for saturation and 2.5 s to reach S/N=100 with ND5 (STIS.ta.1368326). Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes 1565902735640 Timing link suitability includes constraints ([08 After 07 by 0.0 to 0.1 days]) The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1598163026000 301.58 (Tic-Visit :proposal-id 15905 :visit-id "08" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565902715673 We request Visit 1 and 5 to follow an observation that is less than 40 degrees away in coordinates (and minimized as much as possible) to decrease the effects of thermal slew. Our observations are high fidelity observations, resolving scattered light coronagraphically within the core of the PSF and therefore any thermal slew will greatly impact our data. This is a HOPR repeat of visit 05 (Tic-Visit :proposal-id 15905 :visit-id "05" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565902722438 This is a HOPR repeat of visit 56 (Tic-Visit :proposal-id 15905 :visit-id "06" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully. 1565903222480 This is a HOPR repeat of visit 57 (Tic-Visit :proposal-id 15905 :visit-id "07" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 14:07:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 216448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2713 :al-overhead-at-end 0 :internal-dur-at-end 416 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) false 1 0 ETC gives 0.3 seconds for saturation and 0.012 s to reach S/N=100 with ND3 (STIS.ta.1368323) and 68 second for saturation and 2.5 s to reach S/N=100 with ND5 (STIS.ta.1368326). Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes Exposure time scaled from Fomalhaut's 0.1 sec (x5), based on V magnitudes 1565902735640 This is a HOPR repeat of visit 58 (Tic-Visit :proposal-id 15905 :visit-id "08" :proposal-version -1 :trans-version "20190514" :date "15-Aug-2019 13:58:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 228448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15905 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15905 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2726 :al-overhead-at-end 0 :internal-dur-at-end 429 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) false 1 0 ETC gives 7.58 seconds for saturation and 0.28 s to reach S/N=100. Program GO13037 used 2 sec ACQ exposure times successfully.