0 Assigned ID: 60 ----- Attempting Submission 1 (Mon Apr 07 19:08:59 GMT 2014) ----- HST Phase I Proposal 60 (MACS2214_Bradac_apt.pdf.apt) successfully submitted. ----- Attempting Submission 2 (Thu Apr 10 22:21:56 GMT 2014) ----- HST Phase I Proposal 60 (MACS2214_Bradac_apt.pdf.apt) successfully submitted. ----- Attempting Submission 3 (Thu Apr 10 23:24:09 GMT 2014) ----- HST Phase I Proposal 60 (MACS2214_Bradac_apt.pdf.apt) successfully submitted. ----- Attempting Submission 4 (Fri Apr 11 01:25:44 GMT 2014) ----- HST Phase I Proposal 60 (MACS2214_Bradac_apt.pdf.apt) successfully submitted. ----- Attempting Submission 5 (Fri Apr 11 18:17:12 GMT 2014) ----- HST Phase I Proposal 60 (MACS2214_Bradac_apt.pdf.apt) successfully submitted. ----- Attempting Submission 6 (Fri Apr 11 23:26:19 GMT 2014) ----- Changed F098M to F105W filter and added an extra read to F160W. -286842241 ----- Attempting Submission 1 (Wed Jul 16 19:24:36 GMT 2014) ----- ----- Attempting Submission 2 (Tue Jul 22 19:42:53 GMT 2014) ----- In spite of recent progress, the role of distant galaxies in cosmic reionization has been difficult to pin down. A powerful way to make progress is to move beyond counting high redshift sources and study the stellar properties of the population instead. Accurate knowledge of the average star formation density and its recent history in the universe at this epoch is necessary to determine whether these galaxies emit enough hard photons to reionize the Universe. SURFS UP is a Spitzer Exploration Science program (PI Bradac) designed to measure stellar masses and ages of galaxies at z >~ 7 and identify the dominant sources of the bulk of ionizing photons necessary to drive reionization. The last observations were completed in March 2014. The program uses 10 galaxy clusters as cosmic telescopes to study galaxies at intrinsically lower luminosities than blank field surveys of the same exposure time. All clusters but one have both extremely deep HST and Spitzer data available. The last cluster (MACS2214) is lacking HST WFC3-IR data which are crucial to select galaxies at z >~ 7, to study their instantaneous star formation rate via rest-frame UV, and to study their evolved population via rest-frame optical. We request here 5 orbits of WFC3-IR data, which will be a crucial complement to the existing extremely deep Spitzer and HST-ACS data for MACS2214, as well as to the entire SURFS UP sample. The proposal will double the number of currently detected sub-L* galaxies at z>~7 that have been detected by Spitzer and for which we can measure stellar masses and ages. The request of 5 orbits will strongly increase the legacy value of SURFS UP and we waive any proprietary rights. HST imaging 5 orbits for MACS2214-13 to obtain images of z~7 galaxies. WFC3/F098W 1.55 orbits, WFC3/F125W 1.55 orbits, WFC3/F160W 1.75 orbits) We use SPAR-SAMP50 and LOW SKY requirement. There is no ORIENT requirement (except that the entire visit is executed with the same ORIENT) We mix 2 scaled IR-DITHER_BOX patterns, first shifted by (-1,-1) pixels to make it more central and then scaled by 9,and 11. Patterns are offset by (0.2,0.8) pixels. To this we add central points (-0.7,0.5) and (0.7,0.5). The resulting points are [[-11. -11. ] [ 33. 5.5] [ 16.5 33. ] [-27.5 16.5] [ -8.8 -8.2] [ 27.2 5.3] [ 13.7 27.8] [-22.3 14.3] [ -0.7 0.5] [ 0.7 0.5]] or in POSTARG coordinates: [[-1.491 -1.332] [ 4.472 0.666] [ 2.236 3.996] [-3.726 1.998] [-1.192 -0.993] [ 3.686 0.642] [ 1.856 3.367] [-3.022 1.732] [-0.095 0.061] [ 0.095 0.061]] COSMOLOGY 0 false false false false false SUPPORTED CLUSTER OF GALAXIES GRAVITATIONAL LENS J2000 J2000 WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F814W 1406057798257 /private/var/folders/l3/9rqfbk75611fq0pm_l2j7sfw0000gn/T/OPVisit5534443883131252168.xml The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 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