9617( 2) - 05/14/02 06:43 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 9617 Version: 2 Check-in Date: 14-May-2002 06:41:26 1.Proposal Title: STIS CCD Spectroscopic Dispersion Monitor ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle CAL/STIS 11 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Jeff Valenti Space Telescope Science Institute CoI: Jessica Kim Space Telescope Science Institute N ------------------------------------------------------------------------------------ 5. Abstract Constrain wavelength and spatial distortion maps using internal wavecals obtained with all 6 gratings (G230LB, G230MB, G430L, G430M, G750L, G750M) supported for use with the CCD. Data will be obtained for the nearly identical set of 38 central wavelengths used in Cycle 10 or requested in Cycle 11. ------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 2] Observations Description ------------------------ Beginning in Cycle 11, the HITM1 lamp will be used, rather than the LINE lamp. The HITM1 lamp has a more favorable spatial illumination pattern, dropping by only a factor of 3 at row 900, relative to the peak brightness at row 420. In contrast, LINE lamp brightness drops by a factor of 25 at row 900, relative to a peak brightness at row 350. Adequate illumination at row 900 is required to support use of "E1" pseudo-apertures, which place spectra at row 900 to reduce the impact of charge transfer losses during parallel transfers to the CCD readout amplifier at the top of the image. Beginning in Cycle 11, modes with weak lines will be observed with GAIN=1 to minimize the impact of read noise. Modes that require high dynamic range (G230LB, G430L, G750L, and some settings of G750M) will still be observed with GAIN=4. This program uses the HITM1 lamp for a total of 0.6 hours at a lamp current of 10 mA, consuming about 0.05% of the nominal 15000 mA-hour lamp lifetime. Real Time Justification ----------------------- Calibration Justification ------------------------- Spectroscopic dispersion is expected to evolve slowly over the lifetime of STIS. Data obtained in this program will be used to assess this evolution in dispersion. New CCD _dsp calibration reference files will be constructed and delivered, as needed. Additional Comments ------------------- ------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 3] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G230LB 2375 LAMP=HITM1,GAIN=4 1 220 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G230MB 1713 LAMP=HITM1,GAIN=1 1 368 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G230MB 2135 LAMP=HITM1,GAIN=1 1 30 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G230MB 2276 LAMP=HITM1,GAIN=1 1 84 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 4] Visit: 02 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G230MB 1854 LAMP=HITM1,GAIN=1,CR-SPLIT=2 1 600 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G230MB 2416 LAMP=HITM1,GAIN=1 1 41 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G230MB 2557 LAMP=HITM1,GAIN=1 1 63 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 5] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G230MB 1995 LAMP=HITM1,GAIN=1 1 190 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G230MB 2697 LAMP=HITM1,GAIN=1 1 14 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G230MB 2794 LAMP=HITM1,GAIN=1 1 30 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G230MB 2836 LAMP=HITM1,GAIN=1 1 24 S CD ------------------------------------------------------------------------------------------------------------------------------------ 50 NONE STIS/C ACCUM 52X0.1 G230MB 2976 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 6] Visit: 04 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G230MB 3115 LAMP=HITM1,GAIN=1 1 24 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G430L 4300 LAMP=HITM1,GAIN=4 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G430M 3165 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G430M 3423 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 50 NONE STIS/C ACCUM 52X0.1 G430M 3680 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 60 NONE STIS/C ACCUM 52X0.1 G430M 3843 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 7] Visit: 05 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G430M 3936 LAMP=HITM1,GAIN=1 1 13 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G430M 4194 LAMP=HITM1,GAIN=1 1 17 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G430M 4451 LAMP=HITM1,GAIN=1 1 18 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G430M 4706 LAMP=HITM1,GAIN=1 1 21 S CD ------------------------------------------------------------------------------------------------------------------------------------ 50 NONE STIS/C ACCUM 52X0.1 G430M 4961 LAMP=HITM1,GAIN=1 1 24 S CD ------------------------------------------------------------------------------------------------------------------------------------ 60 NONE STIS/C ACCUM 52X0.1 G430M 5093 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 70 NONE STIS/C ACCUM 52X0.1 G430M 5216 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 8] Visit: 06 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G430M 5471 LAMP=HITM1,GAIN=1 1 26 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G750L 7751 LAMP=HITM1,GAIN=4 1 6.2 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G750M 5734 LAMP=HITM1,GAIN=4 1 5.9 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G750M 6252 LAMP=HITM1,GAIN=4 1 4.1 S CD ------------------------------------------------------------------------------------------------------------------------------------ 50 NONE STIS/C ACCUM 52X0.1 G750M 6581 LAMP=HITM1,GAIN=4 1 4.1 S CD ------------------------------------------------------------------------------------------------------------------------------------ 60 NONE STIS/C ACCUM 52X0.1 G750M 6768 LAMP=HITM1,GAIN=4 1 3.9 S CD ------------------------------------------------------------------------------------------------------------------------------------ 70 NONE STIS/C ACCUM 52X0.1 G750M 7283 LAMP=HITM1,GAIN=4 1 3.9 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 9] Visit: 07 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 NONE STIS/C ACCUM 52X0.1 G750M 7795 LAMP=HITM1,GAIN=4 1 29 S CD ------------------------------------------------------------------------------------------------------------------------------------ 20 NONE STIS/C ACCUM 52X0.1 G750M 8311 LAMP=HITM1,GAIN=4 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 30 NONE STIS/C ACCUM 52X0.1 G750M 8561 LAMP=HITM1,GAIN=4 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 40 NONE STIS/C ACCUM 52X0.1 G750M 8825 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 50 NONE STIS/C ACCUM 52X0.1 G750M 9336 LAMP=HITM1,GAIN=1 1 10 S CD ------------------------------------------------------------------------------------------------------------------------------------ 60 NONE STIS/C ACCUM 52X0.1 G750M 9851 LAMP=HITM1,GAIN=1 1 220 S CD ------------------------------------------------------------------------------------------------------------------------------------ 9617( 2) - 05/14/02 06:43 - [ 10] Summary Form for Proposal 9617 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LAMP=HITM1 GAIN=4 GAIN=1 CR-SPLIT=2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category CAL/STIS ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230LB G230MB G430L G430M G750L G750M ------------------------------------------------------------------------------------------------------------------------------------ Target Names NONE ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 2375 1713 2135 2276 1854 2416 2557 1995 2697 2794 2836 2976 3115 4300 3165 3423 3680 3843 3936 4194 4451 4706 4961 5093 5216 5471 7751 5734 6252 6581 6768 7283 7795 8311 8561 8825 9336 9851 ------------------------------------------------------------------------------------------------------------------------------------