Assigned ID: 60 ----- Attempting Submission 1 (Tue Feb 21 13:30:33 GMT 2012) ----- HST Phase I Proposal 60 (prop.apt) successfully submitted. ----- Attempting Submission 2 (Thu Feb 23 18:51:19 GMT 2012) ----- HST Phase I Proposal 60 (prop.apt) successfully submitted. ----- Attempting Submission 3 (Thu Feb 23 22:32:16 GMT 2012) ----- HST Phase I Proposal 60 (prop.apt) successfully submitted. ----- Attempting Submission 4 (Fri Feb 24 23:12:02 GMT 2012) ----- ----- Attempting Submission 1 (Wed Jul 04 14:19:46 GMT 2012) ----- Photometry of the Coldest Benchmark Brown Dwarf In 2011, we used images from the Spitzer Space Telescope to discover the coldest directly imaged companion to a nearby star (300-345 K). In addition to breaking new ground in terms of temperature, this companion is one of a small number of benchmark brown dwarfs whose ages and distances are known via their primaries and thus can provide unusually stringent tests of theoretical models of substellar objects. However, few data are available for this companion for comparison to the models; we have measured photometry from two Spitzer bands, but it has not been detected at near-IR wavelengths with the largest ground-based telescopes (J>23.9). Therefore, we propose to use WFC3 to obtain deeper near-IR images of this object so that we can better test model atmospheres in a previously unexplored regime of temperature. This program consists of WFC3/IR images in F110W of a single faint point source during six orbits. The observations have been designed to maximize the total exposure time, optimize the spatial resolution, and provide sufficient flexibility for scheduling. The images will be obtained through three identical two-orbit visits. In each orbit, one exposure (SPARS100, NSAMP=11, 1000 sec) will be collected at each position in a three-point dither pattern (WFC3-IR-DITHER-LINE-3PT). In each visit, the dither patterns in the two orbits will be offset by 3.5 pixels along the x-axis of the array. COOL STARS 12 false 0.0 0.0 false false false false SUPPORTED STAR BROWN DWARF J2000 J2000 WFC3/IR Imaging No No F110W POS-TARG DITHER DITHER 3 0.4725 WFC3-IR-DITHER-LINE-3PT false false 0.605 2 0 POS-TARG LINE 41.788 1 true /private/var/folders/zz/zzzivhrRnAmviuee+++eS+++8bU/-Tmp-/OPVisit5460138346572033337.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 12815 :visit-id "01" :proposal-version -1 :trans-version "20120604" :date "04-Jul-2012 09:59:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1253424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12815 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12815 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3175 :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 3582 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12815 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3175 :al-overhead-at-end 0 :internal-dur-at-end 424 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3582 :pcs-gap 0 ) true 2 0 /private/var/folders/zz/zzzivhrRnAmviuee+++eS+++8bU/-Tmp-/OPVisit2192768138153594570.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 12815 :visit-id "02" :proposal-version -1 :trans-version "20120604" :date "04-Jul-2012 09:59:15.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1253424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12815 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12815 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3175 :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 3582 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12815 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3175 :al-overhead-at-end 0 :internal-dur-at-end 424 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3582 :pcs-gap 0 ) true 2 0 /private/var/folders/zz/zzzivhrRnAmviuee+++eS+++8bU/-Tmp-/OPVisit4891281633308010058.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 12815 :visit-id "03" :proposal-version -1 :trans-version "20120604" :date "04-Jul-2012 09:59:17.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1253424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12815 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12815 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3175 :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 3582 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12815 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3175 :al-overhead-at-end 0 :internal-dur-at-end 424 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3582 :pcs-gap 0 ) true 2 0