16517( 2) - 07-Sep-2021 13:11:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16517 Version: 2 Check-in Time: 07-Sep-2021 13:11:11 STScI Edit Number: 1 Title NUV flat field monitor: probing the lamp brightness ------------------------------------------------------------------------------------ Type Cycle CAL/STIS 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Amy Jones Space Telescope Science Institute Y ------------------------------------------------------------------------------------ Abstract A special calibration program to better determine an adequate instrument set up, cenwave and aperture, to use for the NUV flat field. The Deuterium lamp that is used for the NUV flat field monitoring program has been generally fading, but not at a predictable rate and one cenwave has even been increasing in brightness over the last few years. This program would measure the count rates at 9 different cenwaves to have a better handle on the current spectrum of the lamp. For this program we only need a decent enough SNR to reliably measure the global count rate (local SNR > 5), which is achievable with ~500s exposures for each cenwave. These observations fit within 2 internal orbits. The apertures for each cenwave have been chosen to ensure that the global count rates are sufficient but not above the nonlinearity limit or unsafe for the detector. ------------------------------------------------------------------------------------ Observations Description ------------------------ cal ------------------------------------------------------------------------------------ 16517( 2) - 07-Sep-2021 13:11:11 - [ 2] Visit: 01 (NUV flats) Visit Requirements: On Hold Comments: Additional Comments: This is the main visit for this program, and contains the exposures used for the STIS NUV flat special calibration. 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 NONE STIS/NUV ACCUM 52X0.5 G230M 2095 LAMP=DEUTERIUM 1 500 S (500 SEQ 1-9 NON-INT -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 2 NONE STIS/NUV ACCUM 52X0.5 G230M 2176 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 3 NONE STIS/NUV ACCUM 52X0.5 G230M 2338 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 4 NONE STIS/NUV ACCUM 52X0.5 G230M 2419 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 5 NONE STIS/NUV ACCUM 52X0.2 G230M 2579 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 6 NONE STIS/NUV ACCUM 52X0.2 G230M 2659 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 7 NONE STIS/NUV ACCUM 52X0.2 G230M 2739 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 8 NONE STIS/NUV ACCUM 52X0.2 G230M 2818 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 9 NONE STIS/NUV ACCUM 52X0.2 G230M 2898 LAMP=DEUTERIUM 1 500 S (500 -MAMA S) Comments: Nominal SLIT-STEP position. ------------------------------------------------------------------------------------------------------------------------------------ 16517( 2) - 07-Sep-2021 13:11:11 - [ 3] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 2095 none none none none 1 N/A -MAMA NONE 2 STIS/NUV ACCUM 52X0.5 G230M 2176 none none none none 1 N/A -MAMA NONE 3 STIS/NUV ACCUM 52X0.5 G230M 2338 none none none none 1 N/A -MAMA NONE 4 STIS/NUV ACCUM 52X0.5 G230M 2419 none none none none 1 N/A -MAMA NONE 5 STIS/NUV ACCUM 52X0.2 G230M 2579 none none none none 1 N/A -MAMA NONE 6 STIS/NUV ACCUM 52X0.2 G230M 2659 none none none none 1 N/A -MAMA NONE 7 STIS/NUV ACCUM 52X0.2 G230M 2739 none none none none 1 N/A -MAMA NONE 8 STIS/NUV ACCUM 52X0.2 G230M 2818 none none none none 2 N/A -MAMA NONE 9 STIS/NUV ACCUM 52X0.2 G230M 2898 none none none none 2 N/A -MAMA 16517( 2) - 07-Sep-2021 13:11:11 - [ 4] Summary Form for Proposal 16517 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, 52X0.5 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LAMP=DEUTERIUM ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 1-9 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230M ------------------------------------------------------------------------------------------------------------------------------------ Target Names NONE ------------------------------------------------------------------------------------------------------------------------------------