11421( 5) - 16-Jun-2009 18:28:28 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11421 Version: 5 Check-in Time: 16-Jun-2009 18:28:28 STScI Edit Number: 5 Title WFC3 Channel Select Mechanism Test ------------------------------------------------------------------------------------ Type Cycle SM4/WFC3 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Howard A. Bushouse Space Telescope Science Institute ------------------------------------------------------------------------------------ Abstract The operation and positioning of the Channel Select Mechanism (CSM) will be verified for the WFC3 UVIS and IR channels. An extended target will be observed in both channels to verify that the field of view is not blocked or vignetted in any way when the CSM is set for UVIS and IR channel operations. Internal IR flat field images will also be used to verify the correct positioning of the IR diffuser paddle. This proposal corresponds to activity ID WFC3-08. ------------------------------------------------------------------------------------ Observations Description ------------------------ Full-frame UVIS and IR images of the galaxy NGC 3031 (M81) will be obtained in order to verify the correct operation of the CSM for both WFC3 channels. The CSM should be fully retracted from the incoming beam for UVIS operations, resulting in a completely unblocked and unvignetted field for the UVIS external exposure. The CSM should fully redirect the incoming beam for the IR external exposure, again resulting in a field of view that is completely filled and unvignetted. The large angular size of NGC 3031 will more than fill the WFC3 FOV, thus making it possible to verify that no part of the FOV is obscured. The UVIS exposure will be a full-frame pair of images bracketing the IR exposures, while the IR will be a single full-frame MultiAcuum-mode exposure. Two IR internal flat field images, using the F098M and F160W filters, will be used to verify the correct positioning of the IR diffuser paddle for IR internal flats. Each IR internal flat observation will consist of a single MultiAccum exposure. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11421( 5) - 16-Jun-2009 18:28:28 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3031 GALAXY, SPIRAL RA=09H55M33.1700S +/- 0.1", J2000 V = -34 V = 6.9 DEC=+69D03'55.10" +/- 0.1" Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 11421( 5) - 16-Jun-2009 18:28:28 - [ 3] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Schedule after WF06 UVIS Detector Functional, prop 11419, and after WF07 IR Detector Functional, prop 11420. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3031 WFC3/UVI ACCUM UVIS F438W CR-SPLIT=NO 1 300 S GS ACQ SCENARIO BASE1BNR S Comments: Automatic CR-SPLIT mode is not used. Instead two individual, and identical, UVIS exposures are obtained before and after the IR exposures, thus allowing for a check of repeated motion of the CSM in and out of the beam. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM Comments: An IR dark exposures is obtained in order to allow subtraction of hot pixels from the external IR exposure of NGC 3031 (exposure 01.003). ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC3031 WFC3/IR MULTIAC IR F110W SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC3031 WFC3/UVI ACCUM UVIS F438W CR-SPLIT=NO 1 300 S SAME POS AS 1 S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3031 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S DARK 2 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM NGC3031 3 WFC3/IR MULTIAC IR F110W none none none none 1 N/A CUM NGC3031 4 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S 11421( 5) - 16-Jun-2009 18:28:28 - [ 4] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TUNGSTEN WFC3/IR MULTIAC IR F098M SAMP-SEQ=STEP100, NSAMP=8 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=6 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TUNGSTEN 1 WFC3/IR MULTIAC IR F098M none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 11421( 5) - 16-Jun-2009 18:28:28 - [ 5] Summary Form for Proposal 11421 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO, NSAMP=15, NSAMP=6, NSAMP=8, SAMP-SEQ=SPARS10, SAMP-SEQ=SPARS25, SAMP-SEQ=STEP100 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1BNR, SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements BLANK, F098M, F110W, F160W, F438W ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK, NGC3031, TUNGSTEN ------------------------------------------------------------------------------------------------------------------------------------