0 Assigned ID: 2539 ----- Attempting Submission 1 (Sun Sep 14 00:48:41 GMT 2014) ----- Be very careful mixing POS TARG and Center_Pattern = Yes Be very careful mixing POS TARG and Center_Pattern = Yes 0 ----- Attempting Submission 1 (Fri Nov 14 20:24:33 GMT 2014) ----- We are happy with the pos targs being applied here and have used them in previous observations. The Burst of the Century The extraordinarily bright GRB 130427A has provided a multiwavelength data set unprecedented in the history of the field. However the light curve of this burst, like that of the large majority of LAT bursts, shows a puzzling lack of a jet break (the hallmark of a collimated outflow). We propose to continue our long-term monitoring of this GRB through to the end of 2015. A detection of a jet break will give us a direct measure of the absolute energy of the burst; its absence will effectively rule out a rotating neutron star as the central engine of the GRB. This last visit to GRB 130427A will be taken over two and half years after the burst to allow an accurate host subtraction. We will use the UVIS camera on WFC3 because WFC3 easily has as good sensitivity on point sources as ACS with smaller detector-induced noise sources (CTE, bias-striping, etc). Two orbits will be taken in the UVIS with three in the IR. Thses observations will be used in order to better study the environment underlying this extremely energetic burst. HOT STARS Default false false false false false SUPPORTED GALAXY HIGH REDSHIFT GALAXY STAR FORMING REGION STARBURST This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F606W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 1 false POS-TARG DITHER DITHER 2 5.183 WFC3-IR-DITHER-LINE false true 0.636 2 41.859 POS-TARG WFC3-IR-DITHER-BLOB 41.788 3 true The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13951 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "13-Nov-2014 13:00:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 5 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 5443600 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13951 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13951 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2908 :al-overhead-at-end 116 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3241 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13951 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3016 :al-overhead-at-end 116 :internal-dur-at-end 31 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3241 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13951 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2846 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3241 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13951 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 2846 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3241 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13951 :visit-id "01" :orbit-number 5 :pcs-time 222 :si-vis-utilization 2846 :al-overhead-at-end 0 :internal-dur-at-end 538 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3241 :pcs-gap 0 ) false 5 0