11989( 6) - 27-Jan-2009 18:01:10 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11989 Version: 6 Check-in Time: 27-Jan-2009 18:01:10 STScI Edit Number: 3 Title The Integral Sign Galaxy ------------------------------------------------------------------------------------ Type Cycle GO/DD 16 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Keith S. Noll Space Telescope Science Institute CoI: Dr. Zolt Levay Space Telescope Science Institute N CoI: Dr. Lisa Frattare Space Telescope Science Institute N CoI: Mr. Max Mutchler Space Telescope Science Institute N CoI: Dr. Mario Livio Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We will observe the unusual warped disk galaxy known as the Integral Sign Galaxy, UGC 3697, with a small two-position WFPC2 mosaic. Observations will be obtained in three broad band filters and the resulting image will be released on the 19th anniversary of the launch of the Hubble Space Telescope on ~April 24, 2009. Multidrizzled mosaics will be made available through the archive. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will utilize a well-tested extragalactic observing sequence for our observations that is designed for maximum efficiency. The main goal of this sequence is to go as deep as possible by using wide filters available in WFPC2. We will use the F450W, F606W and F814W filters to achieve this goal. The redshift of this object precludes the use of a separate H-alpha filter. At each pointing we will observe a 2-orbit sequence in the F450W, F606W, and F814W filters. Each filter will be dithered in a four-position sub-pixel dither pattern with two dither positions per orbit. We can obtain a total of 5600s exposure per filter at each of the two mosaic positions. In the heavily shaded region of Fig.2 the total integration time per pixel will be doubled. The proposed sequence requires a total of 12 orbits. The full galaxy will be observed with a 2-position mosaic (Fig.2). The mosaic is constructed by stepping one WF chip width (with allowance for overlap) between each pointing. During February we are able to observe this galaxy at an orient that produces a slightly diagonal layout (Fig.2) that is the preferred orientation for creating a sense of motion and dynamism in an image. Observations are possible in March as well, if necessary, but we need to have the data in hand by the third week of March at the latest to allow sufficient time for data processing and the standard news approval process. Real Time Justification ----------------------- Calibration Justification 11989( 6) - 27-Jan-2009 18:01:10 - [ 2] ------------------------- Additional Comments ------------------- We request the use of sched 30 which allows 2800s of integration per orbit for this high dec target. We have checked in APT and there is no change in available windows in Jan-Feb 2009 when going from sched 70 to sched 30. This change allows us to avoid needlessly wasting observing time and S/N with no impact to schedulability. The observations must be made by ~March 21, 2009 to allow sufficient time to process the images before the April launch anniversary. We prefer observations in late January or February if possible. We will divide the observing into at least three independent visits to minimize scheduling complications, though we will require all observations to be made at (nearly) the same orient. ------------------------------------------------------------------------------------ 11989( 6) - 27-Jan-2009 18:01:10 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 UGC-03697 GALAXY, DUST LANE, RA=07H11M23.1067S +/- 0.1", J2000 V = 13.3 +/- 0.2 BULGE, INTERACTING DEC=+71D50'31.04" +/- 0.1" GALAXY Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 11989( 6) - 27-Jan-2009 18:01:10 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type LINE WFPC2-BOX Pattern_Purpose MOSAIC DITHER Number_Of_Points 2 4 Point_Spacing 74 0.559017 Line_Spacing 0.559017 Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 0 26.56505 Angle_Between_Sides 143.130102 Center_Pattern NO NO ------------------------------------------------------------------------------------------------------------------------------------ 11989( 6) - 27-Jan-2009 18:01:10 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; ORIENT 140D TO 150 D 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 UGC-03697 WFPC2 IMAGE WF3-FIX F450W CR-SPLIT=NO, CLOCKS=YES 1 1100 S GS ACQ SCENARIO BASE1T3; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 1 1 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 1 2 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 1 3 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 1 4 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 2 1 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 2 2 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 2 3 none none 4 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F450W 2 4 none none 4 N/A 11989( 6) - 27-Jan-2009 18:01:10 - [ 6] Visit: 02 Visit Requirements: SCHED 100%; SAME ORIENT AS 01 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 UGC-03697 WFPC2 IMAGE WF3-FIX F606W CR-SPLIT=NO, CLOCKS=YES 1 1100 S GS ACQ SCENARIO BASE1T3; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 1 1 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 1 2 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 1 3 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 1 4 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 2 1 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 2 2 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 2 3 none none 4 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F606W 2 4 none none 4 N/A 11989( 6) - 27-Jan-2009 18:01:10 - [ 7] Visit: 03 Visit Requirements: SCHED 100%; SAME ORIENT AS 01 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 UGC-03697 WFPC2 IMAGE WF3-FIX F814W CR-SPLIT=NO, CLOCKS=YES 1 1100 S GS ACQ SCENARIO BASE1T3; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 1 1 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 1 2 none none 1 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 1 3 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 1 4 none none 2 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 2 1 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 2 2 none none 3 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 2 3 none none 4 N/A UGC-03697 1 WFPC2 IMAGE WF3-FIX F814W 2 4 none none 4 N/A 11989( 6) - 27-Jan-2009 18:01:10 - [ 8] Summary Form for Proposal 11989 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WF3-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CLOCKS=YES, CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1T3, ORIENT 140D TO 150 D, PATTERN 1 1, SAME ORIENT AS 01, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F450W, F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names UGC-03697 ------------------------------------------------------------------------------------------------------------------------------------