0 Assigned ID: 930 ----- Attempting Submission 1 (Fri Feb 24 23:46:36 GMT 2012) ----- HST Phase I Proposal 930 (APT_SDSS0921.apt) successfully submitted. Resubmission to include 1 internal calibration orbit (Visit 02) linked to GO visit 01, as per ACS/CAL program 13164. -1283869364 ----- Attempting Submission 1 (Thu Jul 05 18:56:44 GMT 2012) ----- ----- Attempting Submission 2 (Fri Oct 05 18:22:42 GMT 2012) ----- Errors arise because internal calibration orbit (Visit 02) has been added to the GO proposal. PC Denise Taylor will rectify configuration to eliminate error messages. SDSS 0921+28: A unique lensed quasar system SDSS 0921+28 is a unique small-separation (1.9") lensed quasar system we found recently. Adaptive optics imaging shows several images of at least two lensed objects: A doubly lensed quasar; An inclined quad image of a lensed galaxy; and possibly an image of the lensed quasar host galaxy. As far as we know this is the first example (in visible light) of a galaxy-mass lens which is lensing multiple sources. We estimate that roughly $1$\% of the quasar lensed by galaxy mass objects have images of additional lensed sources. The existence of a lensed quasar that allows to measure the time delay along with many constraints (maybe of sources at different redshifts) will be a powerful tool for cosmological study as well as to probe the quasar host galaxy in great details. Here we propose to obtain 4 band imaging of the system using 2 HST orbits. Combined with the AO K-band observations this will allow to obtain accurate photometric redshift of the different sources; study their morphology and accurately modeling of the lensing potential. Specifically, the accurate modeling of the lensing potential will have important implications for measurements of cosmological parameters. We request to observe the lensed quasar SDSS0921+28 using the F475W-band (ACS/WFC); F625W (ACS/WFC); F814W (WFC3/UVIS) and F110W (WFC3/IR) filters. AGN/QUASARS 12 false 0.0 0.0 false false false false SUPPORTED GALAXY QUASAR J2000 J2000 ACS/WFC Imaging No No F475W ACS/WFC Imaging No No F625W WFC3/UVIS Imaging No No F814W WFC3/IR Imaging No No F110W POS-TARG DITHER 0.265 LINE 0.187 false false 69.05 4 20.67 ACS-WFC-DITHER-BOX 1 false POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 2 false POS-TARG DITHER 0.572 LINE 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 3 false /private/var/folders/3k/3kTrgPwJHZOKr9ApXZuPa+++2Ec/-Tmp-/OPVisit4937829241332319718.xml Timing link suitability includes constraints ([Group (01 02) Within 14.0 days]) The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13001 :visit-id "01" :proposal-version -1 :trans-version "20120802" :date "05-Oct-2012 14:17:35.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1099344 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13001 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 13001 :visit-id "01" :obset-id "A1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13001 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2920 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3253 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13001 :visit-id "01" :orbit-number 2 :pcs-time 333 :si-vis-utilization 2919 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3253 :pcs-gap 0 ) true 2 0 /private/var/folders/3k/3kTrgPwJHZOKr9ApXZuPa+++2Ec/-Tmp-/OPVisit2104478310001005113.xml Timing link suitability includes constraints ([Group (01 02) Within 14.0 days]) The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13001 :visit-id "02" :proposal-version -1 :trans-version "20120802" :date "05-Oct-2012 14:17:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 0.0 :data-volume 95776 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13001 :visit-id "02" :obset-id "02" :pcs-mode "GYRO" ) (Tic-Orbit :proposal-id 13001 :visit-id "02" :orbit-number 1 :pcs-time 0 :si-vis-utilization 0 :al-overhead-at-end 0 :internal-dur-at-end 1780 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 1 0 This orbit is charged to ACS/CAL program 13164.