0 Assigned ID: 3101 ----- Attempting Submission 1 (Wed Dec 12 18:33:32 GMT 2012) ----- hi, I added FLASH 12 for F438W exposures as recommended. I didn't add for F625W, the background is already already high. thanks, -Pete Challis 1228991059 ----- Attempting Submission 1 (Fri Jan 04 19:34:18 GMT 2013) ----- ----- Attempting Submission 3 (Mon Jan 21 18:50:30 GMT 2013) ----- SN 1987A-- Bridging the Gap for HST's Legacy We request 1 orbit of Directors Discretion Time to avoid a serious gap in the HST observations of a unique event of our (and HSTs) lifetime, SN 1987A. We request this small amount of DD time to continue the very productive imaging portion of the SAINTS SN 1987A program. The last observation of this type was made in January of 2011. If no action is taken, the earliest possible observation will be in 2014. An unbroken string of observations is the essential tool for detecting change and establishing a uniform legacy archive. A gap of a year is not so terrible, a gap of two years is regrettable, but a gap of three years would be a tragedy. As we have demonstrated, these observations are valuable on their own, revealing a new energy source is at work to power the emission from the debris. The HST observations have a unique blend of photometric fidelity and angular resolution that makes them the essential partner to ongoing X-ray, radio, and far-IR observations from the ground and from space. A new element is the advent of ALMA, which has the potential, when used with HST observations, to reveal new aspects of dust formation and the kinematics of the explosion. We need more-or-less simultaneous HST images to extract the maximum understanding from these extensive and sustained efforts at other wavelengths. TBD ISM AND CIRCUMSTELLAR MATTER 0 false false 0.0 0.0 false false false SUPPORTED EXT-STAR SUPERNOVA This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 WFC3/UVIS Imaging No No F438W WFC3/UVIS Imaging No No F625W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 1 false /private/var/folders/2c/744b42kd52b45pbqt7kcgvj80000gn/T/OPVisit2225760965859461529.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. The Visit planner indicates a visibility window from Jan 29, 2013 - Feb 20,2013 an observation during that time would be perfect. (Tic-Visit :proposal-id 13181 :visit-id "01" :proposal-version -1 :trans-version "20121031" :date "21-Jan-2013 13:48:24.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 142608 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13181 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13181 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3199 :al-overhead-at-end 74 :internal-dur-at-end 192 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3582 :pcs-gap 0 ) true 1 0