! From: /tmp_mnt/data/qonos2/cycle6/prop/6928/6928.prop Proposal_Information Title: GHRS Far UV Throughput with COSTAR Mirrors -- Cycle 6 closeout Proposal_Category: CAL/HRS Scientific_Category: Cycle: 6 Investigators PI_Name: Soderblom, David PI_Institution: STScI CoI_Name: Sherbert, Lisa CoI_Institution: STSCI Contact: Abstract: In order to determine if COSTAR is the sole cause of the loss of throughput at the short-wavelength end of GHRS, we intend to make a series of measurements of 2 stars just before and just after the removal of the GHRS COSTAR mirrors. There may also be implications for the primary optics of HST. Questions Observing_Description: This proposal defines the first in a set of two proposals that will monitor the sensitivity calibration of the GHRS Side 1 low resolution grating (G140L) at 2 wavelengths (1200, 1500) and the Side 2 medium resolution gratings (G160M, G200M, G270M) at 5 wavelengths between 1200 and 3000 A through the LSA with the UV spectrophotometric standard stars AGK+81D266 and BD+75D325. The exposure times are relatively short. This proposal does essentially the same measurements as previous sensitivity monitoring proposals except that instead of the normal standard star (BD+28D4211) used for GHRS sensitivity monitoring, the other 2 stars observed at the end of Cycle 3 are being measured. The measurements will be related to BD+28D4211 in time by relating the first 2 visits to the last sensitivity monitor visits of the Sides 1 and 2 CRIMPs. The visibility of BD+28D4211 is driving the timing of the visits, as it become unaccessible a few weeks before the Feb 97 Servicing mission date. ! No longer: The second visit is to be made just BEFORE the GHRS ! COSTAR mirror removal in anticipation of the Feb 97 Servicing Mission ! where GHRS will be removed completely. Real_Time_Justification: Calibration_Justification: Additional_Comments: In order to determine if COSTAR is the sole cause of the loss of throughput at the short-wavelength end of GHRS, we intend to make a series of measurements of 2 stars just before and just after the removal of the GHRS COSTAR mirrors. We would like to be able to tie these measurements, at least in time, to our normal standard star, BD+28D4211. We have split these observations into 2 proposals due to the special considerations that need to be taken into account for making GHRS observations without COSTAR mirrors. Fixed_Targets Target_Number: 1 Target_Name: BD75D325 Alternate_Names: GSC4380-2196 Description: CALIBRATION,PHOTOMETRIC, Position: RA=08H 10M 49.31S +/- 0.100S,DEC=74D 57' 57.5" +/- 0.30",PLATE-ID=00LQ Equinox: J2000 RV_or_Z: RA_PM: 0.0 Dec_PM: 0.0 Epoch: Annual_Parallax: 0.0 Flux: B-V = -0.356 TYPE=O5 V = 9.85 Comments: Coordinates are from GSC Target_Number: 2 Target_Name: AGK81D266 Alternate_Names: GSC4547-1009 Description: CALIBRATION,PHOTOMETRIC, Position: RA=09H 21M 19.06S +/- 0.02S,DEC=+81D 43' 28.6" +/- 0.2",PLATE-ID=00LN Equinox: J2000 RV_or_Z: RA_PM: 0.0 Dec_PM: 0.0 Epoch: Annual_Parallax: 0.0 Flux: V=11.92 +/- 0.1 B=11.59 +/- 0.02 Comments: Info taken from Cycle 3 HRS/CAL Proposal 5041 Solar_System_Targets Generic_Targets Scan_Data !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! Visits !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! ! Do we need Visit_Requirements to tie these observations together in time? Visit_Number: 01 Visit_Requirements: On_Hold_Comments: Visit_Comments: Schedule within a week of the last CRIMP (6897 & 6898) BD+28 measurements. Exposure_Number: 151 Target_Name: BD75D325 Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: BRIGHT=RETURN,SEARCH-SIZE=5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQ FOR 152-185 Comments: STEP-TIME=0.2 SEC Exposure_Number: 152 Target_Name: BD75D325 Config: HRS Opmode: IMAGE Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: DELTA-Y=4,DELTA-X=4,NY=16,NX=16 Number_of_Iterations: 1 Time_Per_Exposure: 51.2S Special_Requirements: Comments: STEP-TIME=0.2 SEC Exposure_Number: 161 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1200.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 272S Special_Requirements: Comments: Exposure_Number: 162 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1500.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 54.4S Special_Requirements: Comments: Exposure_Number: 181 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1200.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 182 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 216S Special_Requirements: Comments: Exposure_Number: 183 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G200M Wavelength: 2000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 184 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 144S Special_Requirements: Comments: Exposure_Number: 185 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 3000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 403.2S Special_Requirements: Comments: !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! Visit_Number: 02 Visit_Requirements: On_Hold_Comments: Visit_Comments: Schedule within a week of the last CRIMP (6897 & 6898) BD+28 measurements. Exposure_Number: 251 Target_Name: AGK81D266 Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: BRIGHT=RETURN,SEARCH-SIZE=5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQ FOR 252-285 Comments: STEP-TIME=0.2 SEC Exposure_Number: 252 Target_Name: AGK81D266 Config: HRS Opmode: IMAGE Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: DELTA-Y=4,DELTA-X=4,NY=16,NX=16 Number_of_Iterations: 1 Time_Per_Exposure: 51.2S Special_Requirements: Comments: STEP-TIME=0.2 SEC Exposure_Number: 261 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1200.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 1088S Special_Requirements: Comments: Exposure_Number: 262 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1500.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 217.6S Special_Requirements: Comments: Exposure_Number: 281 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1200.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 576S Special_Requirements: Comments: Exposure_Number: 282 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 432S Special_Requirements: Comments: Exposure_Number: 283 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G200M Wavelength: 2000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 576S Special_Requirements: Comments: Exposure_Number: 284 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 285 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 3000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 806.4S Special_Requirements: Comments: !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! Visit_Number: 03 Visit_Requirements: ON HOLD On_Hold_Comments: Do only if there is a problem with Visit 01. Visit_Comments: Do BEFORE GHRS COSTAR mirrors are removed. Exposure_Number: 351 Target_Name: BD75D325 Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: BRIGHT=RETURN,SEARCH-SIZE=5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQ FOR 352-385 Comments: STEP-TIME=0.2 SEC Exposure_Number: 352 Target_Name: BD75D325 Config: HRS Opmode: IMAGE Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: DELTA-Y=4,DELTA-X=4,NY=16,NX=16 Number_of_Iterations: 1 Time_Per_Exposure: 51.2S Special_Requirements: Comments: STEP-TIME=0.2 SEC Exposure_Number: 361 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1200.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 272S Special_Requirements: Comments: Exposure_Number: 362 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1500.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 54.4S Special_Requirements: Comments: Exposure_Number: 381 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1200.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 382 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 216S Special_Requirements: Comments: Exposure_Number: 383 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G200M Wavelength: 2000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 384 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 144S Special_Requirements: Comments: Exposure_Number: 385 Target_Name: BD75D325 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 3000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 403.2S Special_Requirements: Comments: !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! Visit_Number: 04 Visit_Requirements: ON HOLD On_Hold_Comments: Do only if there is a problem with Visit 02. Visit_Comments: Do BEFORE GHRS COSTAR mirrors are removed. Exposure_Number: 451 Target_Name: AGK81D266 Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: BRIGHT=RETURN,SEARCH-SIZE=5 Number_of_Iterations: 1 Time_Per_Exposure: 5S Special_Requirements: ONBOARD ACQ FOR 452-485 Comments: STEP-TIME=0.2 SEC Exposure_Number: 452 Target_Name: AGK81D266 Config: HRS Opmode: IMAGE Aperture: 2.0 Sp_Element: MIRROR-N1 Wavelength: Optional_Parameters: DELTA-Y=4,DELTA-X=4,NY=16,NX=16 Number_of_Iterations: 1 Time_Per_Exposure: 51.2S Special_Requirements: Comments: STEP-TIME=0.2 SEC Exposure_Number: 461 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1200.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 1360S Special_Requirements: Comments: Exposure_Number: 462 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G140L Wavelength: 1500.0 Optional_Parameters: STEP-PATT=5,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 272S Special_Requirements: Comments: Exposure_Number: 481 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1200.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 576S Special_Requirements: Comments: Exposure_Number: 482 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G160M Wavelength: 1500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 432S Special_Requirements: Comments: Exposure_Number: 483 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G200M Wavelength: 2000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 576S Special_Requirements: Comments: Exposure_Number: 484 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2500.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 288S Special_Requirements: Comments: Exposure_Number: 485 Target_Name: AGK81D266 Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 3000.0 Optional_Parameters: STEP-PATT=4,FP-SPLIT=NO,COMB=FOUR,STEP-TIME=0.2 Number_of_Iterations: 1 Time_Per_Exposure: 806.4S Special_Requirements: Comments: !#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#!#! Data_Distribution ! Defaults indicated; change if desired Medium: 8MM Blocking_Factor: 1 Ship_To: STSCI Ship_Via: Recipient_Email: lisa@stsci.edu