11437( 2) - 30-May-2008 12:07:40 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11437 Version: 2 Check-in Time: 30-May-2008 12:07:40 STScI Edit Number: 0 Title WFC3 IR Image Quality ------------------------------------------------------------------------------------ Type Cycle SM4/WFC3 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. George Hartig Space Telescope Science Institute ------------------------------------------------------------------------------------ Abstract The IR imaging performance over field will be assessed in two passbands to verify PSF encircled energy CEI specifications and other performance metrics at 1 and 1.6 um, after the instrument has been aligned to the OTA. This proposal is activity ID WFC3-24. ------------------------------------------------------------------------------------ Observations Description ------------------------ The IR imaging performance over field will be assessed in two passbands to verify PSF encircled energy CEI specifications at 1 and 1.6 um, after the instrument has been aligned to the OTA. The observed field must be sufficiently dense to provide good sampling over the FOV while providing enough isolated stars to permit accurate PSF measurement. If the field is astrometric and astrometric guide stars are used, the plate scale and image orientation may also be determined. NGC-188 star 58 is a likely target, available year-round and used previously for ACS alignment. The F098M and F164N filters will be used. Addiditonal measurements will be made with several other filters, including F127M, for direct comparison with proposal 11435 images. Full frame images will be obtained at each of 4 dither positions designed to improve PSF sampling. Sampling of the field will be improved by larger POS-TARG offsets in some filters. Offset target positions are defined for observations late in the sequence, to enable assessment of the level of persistence from saturated point source images and avoid its effects on the image quality measurement. Real Time Justification ----------------------- Calibration Justification ------------------------- The image quality of WFC IR science data is fully assessed at the CEI spec wavelengths. Additional Comments ------------------- ------------------------------------------------------------------------------------ 11437( 2) - 30-May-2008 12:07:40 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC188-58 STELLAR CLUSTER, OPEN RA=00H47M4.4540S +/- 0.001S, J2000 V = 14.65 +/- 0.05 CLUSTER DEC=+85D16'32.70" +/- 0.01", PLATE-ID=ZZZZ Reference Frame: GSC1 Comments: Use guide stars from the NGC188 Astrometric Catalog (Plate-ID ZZZZ) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.00257 -0.0112 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC188-58-OF STELLAR CLUSTER, OPEN RA=00H47M4.4540S +/- 0.001S, J2000 V = 14.65 +/- 0.05 F1 CLUSTER DEC=+85D16'42.70" +/- 0.01", PLATE-ID=ZZZZ Reference Frame: GSC1 Comments: Use guide stars from the NGC188 Astrometric Catalog (Plate-ID ZZZZ) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.00257 -0.0112 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC188-58-OF STELLAR CLUSTER, OPEN RA=00H47M4.4540S +/- 0.001S, J2000 V = 14.65 +/- 0.05 F2 CLUSTER DEC=+85D16'22.70" +/- 0.01", PLATE-ID=ZZZZ Reference Frame: GSC1 Comments: Use guide stars from the NGC188 Astrometric Catalog (Plate-ID ZZZZ) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.00257 -0.0112 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 11437( 2) - 30-May-2008 12:07:40 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 11437( 2) - 30-May-2008 12:07:40 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Schedule after IR Fine Alignment, prop 11435, visit 3. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC188-58 WFC3/IR MULTIAC IR F164N SAMP-SEQ=SPARS25, NSAMP=7 1 DEF PATTERN 1 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC188-58 WFC3/IR MULTIAC IR F127M SAMP-SEQ=RAPID, NSAMP=15 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC188-58 WFC3/IR MULTIAC IR F160W SAMP-SEQ=RAPID, NSAMP=7 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC188-58 WFC3/IR MULTIAC IR F160W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20.0, 0. CUM ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC188-58 WFC3/IR MULTIAC IR F160W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20., 20. CUM ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC188-58 WFC3/IR MULTIAC IR F160W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 0., 20. CUM ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC188-58-O WFC3/IR MULTIAC IR F098M SAMP-SEQ=RAPID, NSAMP=7 1 DEF FF1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC188-58-O WFC3/IR MULTIAC IR F098M SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20., 0. FF1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC188-58-O WFC3/IR MULTIAC IR F098M SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20., 20. FF1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC188-58-O WFC3/IR MULTIAC IR F098M SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 0., 20. FF1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC188-58-O WFC3/IR MULTIAC IR F105W SAMP-SEQ=RAPID, NSAMP=7 1 DEF FF2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC188-58-O WFC3/IR MULTIAC IR F105W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20., 0. FF2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC188-58-O WFC3/IR MULTIAC IR F105W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 20., 20. FF2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC188-58-O WFC3/IR MULTIAC IR F105W SAMP-SEQ=RAPID, NSAMP=7 1 DEF POS TARG 0., 20. FF2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 11437( 2) - 30-May-2008 12:07:40 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC188-58 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A CUM NGC188-58 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A CUM NGC188-58 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A CUM NGC188-58 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A CUM NGC188-58 2 WFC3/IR MULTIAC IR F127M 1 none none none 1 N/A CUM NGC188-58 2 WFC3/IR MULTIAC IR F127M 2 none none none 1 N/A CUM NGC188-58 2 WFC3/IR MULTIAC IR F127M 3 none none none 1 N/A CUM NGC188-58 2 WFC3/IR MULTIAC IR F127M 4 none none none 1 N/A CUM NGC188-58 3 WFC3/IR MULTIAC IR F160W none none none none 2 N/A CUM NGC188-58 4 WFC3/IR MULTIAC IR F160W none none none none 2 N/A CUM NGC188-58 5 WFC3/IR MULTIAC IR F160W none none none none 2 N/A CUM NGC188-58 6 WFC3/IR MULTIAC IR F160W none none none none 2 N/A CUM NGC188-58-OFF1 7 WFC3/IR MULTIAC IR F098M none none none none 2 N/A CUM NGC188-58-OFF1 8 WFC3/IR MULTIAC IR F098M none none none none 2 N/A CUM NGC188-58-OFF1 9 WFC3/IR MULTIAC IR F098M none none none none 2 N/A CUM NGC188-58-OFF1 10 WFC3/IR MULTIAC IR F098M none none none none 2 N/A CUM NGC188-58-OFF2 11 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM NGC188-58-OFF2 12 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM NGC188-58-OFF2 13 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM NGC188-58-OFF2 14 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM 11437( 2) - 30-May-2008 12:07:40 - [ 6] Summary Form for Proposal 11437 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=15, NSAMP=7, SAMP-SEQ=RAPID, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 1 2, POS TARG 0., 20., POS TARG 20., 0., POS TARG 20., 20., POS TARG 20.0, 0. ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F098M, F105W, F127M, F160W, F164N ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC188-58, NGC188-58-OFF1, NGC188-58-OFF2 ------------------------------------------------------------------------------------------------------------------------------------