This only appears to use 30 orbits because of the the original and repeat visits (01,02,51,52) for Arp 273. This version switches to Arp 147 which is 10 orbits in visits 71,72,73,74. In this revision the R filter was removed, and that time was applied to the V and I filters. ----- Attempting Submission 2 (Wed Oct 22 21:08:07 GMT 2008) ----- ----- Attempting Submission 3 (Thu Oct 23 13:42:27 GMT 2008) ----- We are actually only using the allocated 10 orbits, although it looks like 30 orbits due to failed/repeat ON HOLD Arp 273 visits.. Different responses in interacting galaxies We propose WFPC2 observations of the interacting spiral galaxies Arp 273 or Arp 147. Arp 273 is our first choice, and is a fascinating object in its own right, in that the two interacting galaxies exhibit different behaviors due to the interaction. The disk of the larger galaxy is extremely disturbed, but its nucleus shows few signs of activity (it is a LINER). In the smaller (nearly edge-on) galaxy on the other hand, the disk appears to be almost intact, but its nucleus experiences a starburst. The proposed observations are also intended to demonstrate that WFPC2 can produce outstanding science (and images) after the transition to Side B.
For Arp 273, we perform a large mosaic shift since the galaxy pair does not fit within one WFPC2 pointing. At each mosaic pointing, we perform a small dither too. For the broadband B,V,I filters we do a 3-step dither which will primarily help to reject cosmic rays and CCD artifacts. For the longer F673N exposures (where we expect to detect redshifted H-alpha emission), a subsampling 4-point dither box pattern is used. The 4 exposures will ensure good cleaning of these long narrowband exposures, and also allow for the resolution of the H-alpha image to be enhanced via drizzling. For Arp 147, we use the subsampling dither box pattern for all filters. There is no good narrowband filter to isolate redshifted H-alpha at the distance of this target. The proposal is split into multiple visits to avoid SAA impacts, but we'd like the visits scheduled as close together as possible, and as soon as possible. Please use the same guide stars for all visits, and schedule a TDRSS dump as soon as possible following the completion of this program. Visits 01 and 02 were scheduled but never executed due to the unexpected anomalies arising during the side B switch. The repeat visits 51 and 52 are identical, but ON HOLD since Arp 147 now becomes a more feasible target. If the side B switch experiences any further delay, we might revert back to Arp 273, which becomes feasible again on 20 Nov 2008. 0 false 0.0 0.0 false false false false false SUPPORTED CLUSTER OF GALAXIES INTERACTING GALAXY This object was generated by the targetselector and retrieved from the NED database. J2000 00 00 0.0000 +00 00 0.00 J2000 GALAXY INTERACTING GALAXY This object was generated by the targetselector and retrieved from the NED database. It is a replacement target, since Arp 273 became infeasible due to the delay in the side B switch. B=15.1, E(B-V) = 0.095 IC-0298 J2000 00 00 0.0000 +00 00 0.00 J2000 POS-TARG MOSAIC DITHER 3 74 LINE false false 0.4 2 0 POS-TARG LINE 45 2 true POS-TARG DITHER MOSAIC 2 0.559017 LINE 0.559017 false false 143.130102 74 4 26.56505 POS-TARG WFPC2-BOX 0 3 true POS-TARG DITHER 0.559017 LINE 0.559017 false false 143.130102 4 26.56505 WFPC2-BOX 4 false POS-TARG DITHER 0.3535 LINE false false 2 45.0 WFPC2-LINE 5 false Timing link suitability includes constraints ([Sequence (01 02) within 1.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v01.xml Please get the data from these observations to the ground as quickly has possible. 1224334799000 200.0 (Tic-Visit :proposal-id 11902 :visit-id "01" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:31:51.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 6 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 806688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 3 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 4 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 5 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "01" :orbit-number 6 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) true 6 0 Timing link suitability includes constraints ([Sequence (01 02) within 1.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v02.xml Using the same guide stars for visits 01 and 02 would make assembling the mosaic easier, but is not a requirement. Please get the data from these observations to the ground as quickly has possible. 1224415333000 200.0 (Tic-Visit :proposal-id 11902 :visit-id "02" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:31:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 358528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "02" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "02" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "02" :orbit-number 3 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "02" :orbit-number 4 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) true 4 0 Timing link suitability includes constraints ([Sequence (51 52) within 1.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /private/tmp/OPVisit50748.xml Please get the data from these observations to the ground as quickly has possible. This is a copy of visit 01. (Tic-Visit :proposal-id 11902 :visit-id "51" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:40:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 6 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 806688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "51" :obset-id "51" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 3 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 4 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 5 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "51" :orbit-number 6 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) true 6 0 This target was our first choice, but it became infeasible due to the delay in the side B switch. We leave it ON HOLD because it becomes feasible again on Nov 20, and we may revert to it if the side B switch is delayed further. Timing link suitability includes constraints ([Sequence (51 52) within 1.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v52.xml Using the same guide stars for visits 51 and 52 would make assembling the mosaic easier, but is not a requirement. Please get the data from these observations to the ground as quickly has possible. This is a copy of visit 02. (Tic-Visit :proposal-id 11902 :visit-id "52" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:32:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 358528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "52" :obset-id "52" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "52" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "52" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "52" :orbit-number 3 :pcs-time 355 :si-vis-utilization 2754 :al-overhead-at-end 126 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "52" :orbit-number 4 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3159 :pcs-gap 0 ) true 4 0 This target was our first choice, but it became infeasible due to the delay in the side B switch. We leave it ON HOLD because it becomes feasible again on Nov 20, and we may revert to it if the side B switch is delayed further. Timing link suitability includes constraints ([Sequence (71 72 73 74) within 7.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v71.xml All of the Arp 147 exposures have the same POS TARG offset (in addition to the dither pattern) to move this smallish target a bit closer to the WFPC2 apex for better positioning in the overall field-of-view, and also to minimize CTE degradation. (Tic-Visit :proposal-id 11902 :visit-id "71" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:32:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 358528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "71" :obset-id "71" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "71" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "71" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "71" :orbit-number 3 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "71" :orbit-number 4 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) true 4 0 Timing link suitability includes constraints ([Sequence (71 72 73 74) within 7.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v72.xml (Tic-Visit :proposal-id 11902 :visit-id "72" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:32:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 179264 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "72" :obset-id "72" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "72" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "72" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) true 2 0 Timing link suitability includes constraints ([Sequence (71 72 73 74) within 7.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v73.xml (Tic-Visit :proposal-id 11902 :visit-id "73" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:32:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 179264 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "73" :obset-id "73" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "73" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "73" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) true 2 0 Timing link suitability includes constraints ([Sequence (71 72 73 74) within 7.0 days]) The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /Users/mutchler/Working/APT/heritage/sm4delay/OP-cache/11902_removeR-v74.xml (Tic-Visit :proposal-id 11902 :visit-id "74" :proposal-version -1 :trans-version "20080609" :date "23-Oct-2008 09:32:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "26" :si-bright-earth-limb-angle 20.0 :data-volume 179264 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11902 :visit-id "74" :obset-id "74" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11902 :visit-id "74" :orbit-number 1 :pcs-time 355 :si-vis-utilization 2720 :al-overhead-at-end 160 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) (Tic-Orbit :proposal-id 11902 :visit-id "74" :orbit-number 2 :pcs-time 355 :si-vis-utilization 2700 :al-overhead-at-end 180 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3132 :pcs-gap 0 ) true 2 0