12777( 4) - 10-Oct-2011 13:19:58 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12777 Version: 4 Check-in Time: 10-Oct-2011 13:19:58 STScI Edit Number: 7 Title MAMA NUV Flats ------------------------------------------------------------------------------------ Type Cycle CAL/STIS 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Elena Mason Space Telescope Science Institute - ESA CoI: Dr. Charles R. Proffitt Computer Sciences Corporation N CoI: Mr. Michael A. Wolfe Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract This program is aimed at obtaining NUV-MAMA flat-field observations for the construction of pixel-to-pixel flats (p-flats) with a SNR of ~100 per binned pixel. The flats are obtained with the DEUTERIUM-lamp and the MR grisms G230M. The actual choice of central wavelength and slit combination depends on the observed count level within each exposure. Note that STIS NUV-MAMA flats are taken every other cycles (i.e. during odd number cycles) in order to not drain the DEUTERIUM lamp lifetime. ------------------------------------------------------------------------------------ Observations Description ------------------------ Past experience and observations have shown that ~11 visits are sufficient to build a p-flat with the required SNR~100/pix (2x2 "binning", low-res mode). However the actual instrument setup (central wavelength and slit width) and exposure time might change during the cycle in order to guarantee the needed count-level of ~250000-280000 cps/frame. Past experience and observations have also shown that NUV-MAMA p-flats are mode independent, i.e. they do not depend on the wavelength. Therefore, a high-quality p-flat constructed with the G230M suffice all NUV-MAMA spectroscopic and imaging programs. The G230M flats will be taken with the slit at 5 different offset positions in order to illuminate also those detector region which are normally shadowed by the slit bars. The first visit will be performed with G230M centered at 2338A and the slit 52x0.5 (as in program 11862) for which we estimate ~225297 cps. The first visit will need an exposure time of 4630 sec as in program 11862. However, from the second or third visit we might move to G230M/2419 (which will deliver a factor 1.17 more counts, i.e ~263597cps) and exposure time of 3588sec, in order to possibly save ~2.9 hr of lamp lifetime. Note that both the combination G230M/2338/52x0.5 and G230M/2419/52x0.5 are not coded in the "MAMA Flat Field Parameters Table" and therefore require special handling during the visits. Namely, in order to avoid that the a "safety procedure" is triggered and the deuterium lamp is turned off, the special engineering parameters (quesiparms) TARGTYPE and EXPADJ have to be specified as follow: 12777( 4) - 10-Oct-2011 13:19:58 - [ 2] _ TARGTYPE=D2 _ EXPADJ = 438 whenever the parameter SLIT-STEP is NOT specified, and EXPADJ=442 whenever the parameter SLIT-STEP is specified. These two values (438 and 442) have also to be added to the EXPOSURE-TIME in order to guarantee that the exposure duration and the flux level are the desired one. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12777( 4) - 10-Oct-2011 13:19:58 - [ 3] Visit: 01 Visit Requirements: BETWEEN 24-OCT-2011:00:00:00 AND 20-NOV-2011:00:00:00 On Hold Comments: Additional Comments: First exposure in the sequence: uses old setup and serves as a test to determine the count rate. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2338 LAMP=DEUTERIUM 1 5068 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 438 Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2338 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 4] Visit: 02 Visit Requirements: AFTER 01 BY 25 D TO 35 D On Hold Comments: Additional Comments: 25-30 day after visit 01 in order to grant time for the analysis of the first image and the modification of the observing strategy as necessary. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM 1 4026 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 438 Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 5] Visit: 03 Visit Requirements: AFTER 02 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 02 and 03 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, SLIT-STEP=1680 1 4030 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Second of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 6] Visit: 04 Visit Requirements: AFTER 03 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 03 and 04 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, SLIT-STEP=3360 1 4030 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Third of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 7] Visit: 05 Visit Requirements: AFTER 04 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 04 and 05 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, 1 4030 S SPEC COM INSTR ECMAIN; -MAMA SLIT-STEP=-1680 QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Fourth of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 8] Visit: 06 Visit Requirements: AFTER 05 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 05 and 06 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, 1 4030 S SPEC COM INSTR ECMAIN; -MAMA SLIT-STEP=-3360 QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Fifth of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 9] Visit: 07 Visit Requirements: AFTER 06 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 06 and 07 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM 1 4026 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 438 Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 10] Visit: 08 Visit Requirements: AFTER 07 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 07 and 08 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, SLIT-STEP=1680 1 4030 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Second of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 11] Visit: 09 Visit Requirements: AFTER 08 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 08 and 09 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, SLIT-STEP=3360 1 4030 S SPEC COM INSTR ECMAIN; -MAMA QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Third of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 12] Visit: 10 Visit Requirements: AFTER 09 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 09 and 10 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, 1 4030 S SPEC COM INSTR ECMAIN; -MAMA SLIT-STEP=-1680 QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Fourth of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 13] Visit: 11 Visit Requirements: AFTER 10 BY 10 D TO 30 D On Hold Comments: Additional Comments: Allow at least 7 days between visit 10 and 11 to avoid that the whole program is possibly executed within a technical problem (e.g. detector OFF and lamp OM) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM, 1 4030 S SPEC COM INSTR ECMAIN; -MAMA SLIT-STEP=-3360 QESIPARM TARGTYPE D2; QESIPARM EXPADJ 442 Comments: Fifth of five SLIT-STEP positions. MAMA plate scale along slit is 0.029 arcsec/pixel, fiducial bars are 0.5 and 0.86 arcsec, and the slit wheel steps 35 units per pixel. So this SLIT-STEP position will provide about an 18 pixel gap between the projection of the largest bar from the nominal position. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NONE 1 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA 12777( 4) - 10-Oct-2011 13:19:58 - [ 14] Summary Form for Proposal 12777 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.5 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LAMP=DEUTERIUM, SLIT-STEP=-1680, SLIT-STEP=-3360, SLIT-STEP=1680, SLIT-STEP=3360 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 25 D TO 35 D, AFTER 02 BY 10 D TO 30 D, AFTER 03 BY 10 D TO 30 D, AFTER 04 BY 10 D TO 30 D, AFTER 05 BY 10 D TO 30 D, AFTER 06 BY 10 D TO 30 D, AFTER 07 BY 10 D TO 30 D, AFTER 08 BY 10 D TO 30 D, AFTER 09 BY 10 D TO 30 D, AFTER 10 BY 10 D TO 30 D, BETWEEN 24-OCT-2011:00:00:00 AND 20-NOV-2011:00:00:00, QESIPARM EXPADJ 438, QESIPARM EXPADJ 442, QESIPARM TARGTYPE D2, SPEC COM INSTR ECMAIN ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230M ------------------------------------------------------------------------------------------------------------------------------------ Target Names NONE ------------------------------------------------------------------------------------------------------------------------------------