0 Assigned ID: 604 ----- Attempting Submission 1 (Fri Apr 11 17:24:28 GMT 2014) ----- HST Phase I Proposal 604 (lae_c22_hst.apt) successfully submitted. ----- Attempting Submission 2 (Fri Apr 11 21:18:45 GMT 2014) ----- POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp or WFC3 quad filters as central wavelengths & transmission efficiencies vary within the apertures. This a re-submission, updating the “Special Observation Requirement: Schedulability” fields for visits 2, 3 and 5 at the recommendation of our STScI contact to allow for earlier scheduling of these observations. -491355648 ----- Attempting Submission 1 (Thu Jul 24 19:28:16 GMT 2014) ----- ----- Attempting Submission 2 (Mon Aug 25 15:29:40 GMT 2014) ----- ----- Attempting Submission 3 (Fri Aug 28 15:19:56 GMT 2015) ----- The warnings are reminders regarding the use of dither patterns with the ACS ramp filters, which use only a fraction of the ACS detector and therefore require careful attention to dithering. This should not be an issue with our observations, as our targets are much smaller (~< 10 square arcseconds) than the ramp filter regions (25 x 60 arcseconds being the smallest), and our dither steps are all smaller than ~3 arcseconds. Resolving Lyman-alpha Emission On Physical Scales < 270 pc at z > 4 We propose ACS-WFC Ramp narrowband imaging of six strongly lensed Lyman-alpha Emitters (LAEs) at z > 4 that will spatially resolve the Lyman-alpha line emitting regions on scales < 270 pc. The best available observations (HST, Spitzer, 10m ground based telescopes) are unable to provide robust measurements of the structure of these galaxies from blank field studies, but strong gravitational lensing provides a unique opportunity to peer into the heart of young star forming galaxies at high redshift and address outstanding questions regarding their morphology and evolution. Strong lensing magnifies each of our target LAEs, increasing the effective spatial resolution of ACS-WFC such that the point spread function will correspond to physical scales < 270 parsecs within all six z > 4 galaxies. Additionally, the boost in flux due to gravitational lensing makes our proposed targets the brightest sources of their kind at these redshifts, in spite of the fact that they are intrinsically ~L* LAEs. The proposed observations will probe the morphological properties of Lyman-alpha and UV continuum emission in typical/representative high-redshift LAEs with signal-to-noise and spatial resolution comparable to studies of Lyman-alpha emitting galaxies in the z ~ 0.1 universe. The resulting data will bridge the gap between deep ground-based studies of blank field LAEs at high redshift, and detailed studies of low-redshift LAEs. We will be acquiring ACS-WFC Ramp Filter observations of six strongly lensed Lyman Alpha Emitters (LAEs). One of the six targets will also require broadband F850LP observations. Each target will be observed for either 2 or 3 orbits. The three targets with 2 orbits will have 4 individual exposures in each filter (this includes the one target that will have both Ramp Filter and broadband observations). The three targets with 3 orbits will have 6 individual Ramp Filter exposures (2/orbit). From these data we will measure the spatial extent and morphology of Lyan-alpha and rest-frame UV emission emitting regions on physical scales of <270 pc, where the high spatial resolution is achieved via the combination of superb HST image quality and magnification from gravitational lensing. We optimize ramp filter wavelength settings to match the Lyman-alpha line emission for each target. From the available imaging and spectroscopy we generate precise estimates of the integration times necessary to achieve good S/N in the ramp narrowband imaging for each source. We calculate the necessary integration times to achieve a minimum S/N of $\gtrsim$30 per LAE using the ACS/Ramp and ACS/imaging exposure time calculator (ETC). The choice of minimum S/N ensures that we can measure a robust radial light profile for these sources regardless of whether they are highly compact, or extended in Lyman-alpha. The orbit packing for these observations is straightforward, and for all targets we will employ a dither pattern with a minimum of four individual exposures per source, per filter in order to facilitate cosmic ray rejection. The dithering uses dither steps intended to subsample the pixel array to improve the quality of the final PSF reconstruction, post drizzling, and to help mitigate the impact of any chip defects. Due to the low background (between ~8-20 e- per pixel for our various exposures) expected in our data, we also apply a post-flash to each exposure in order to facilitate charge transfer efficiency (CTE) corrections. UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 false false false false 0.0 0.0 SUPPORTED GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 i = 22.8, z = 23.3 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 r = 23.5, i = 24.2 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 i = 23.3, z=23.3 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 r = 22.2, i = 22.3 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 F814W = 22.1, Rc=22.4 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY LYMAN ALPHA CLOUD STAR FORMING REGION J2000 J2000 i =22.7 ACS/WFC RampFilter No No FR601N ACS/WFC RampFilter No No FR782N ACS/WFC RampFilter No No FR716N ACS/WFC RampFilter No No FR601N ACS/WFC RampFilter No No FR716N ACS/WFC Imaging No No F850LP ACS/WFC RampFilter No No FR716N POS-TARG DITHER 0.265 LINE 0.187 false false 69.05 4 20.67 ACS-WFC-DITHER-BOX 5 false POS-TARG DITHER 3.011 LINE false false 2 85.28 ACS-WFC-DITHER-LINE 6 false POS-TARG DITHER 0.187 LINE false false 2 175.28 ACS-WFC-DITHER-LINE 7 false The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13639 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "25-Aug-2014 11:22:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1705344 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2944 :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 3278 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3056 :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 3278 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3056 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3278 :pcs-gap 0 ) true 3 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13639 :visit-id "02" :proposal-version -1 :trans-version "20140605" :date "25-Aug-2014 11:22:06.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1705344 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2924 :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 3257 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3034 :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 3257 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "02" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3035 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3257 :pcs-gap 0 ) false 3 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13639 :visit-id "03" :proposal-version -1 :trans-version "20140605" :date "25-Aug-2014 11:22:08.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2982 :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 3316 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3094 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) false 2 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1411439093000 87.35920445072497 (Tic-Visit :proposal-id 13639 :visit-id "04" :proposal-version -1 :trans-version "20140605" :date "25-Aug-2014 11:22:10.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1705344 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2888 :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 3222 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3000 :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 3222 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "04" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3000 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 3 0 The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. This target/visit is the one that I am most incertain about re: the dither patterns, as I had to create a second small-scale dither line pattern. My goal (in using Pattern 7 here) was to achieve a subpixel dither that is orthogonal to the pre-defined "ACS-WFC-DITHER-LINE" pattern. (Tic-Visit :proposal-id 13639 :visit-id "05" :proposal-version -1 :trans-version "20150609" :date "28-Aug-2015 11:19:18.0" :trans-errors '(:WARNINGS 2 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 2273792 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2889 :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 3156 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "05" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2997 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3156 :pcs-gap 0 ) true 2 2 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1429724696000 100.87252110928779 (Tic-Visit :proposal-id 13639 :visit-id "06" :proposal-version -1 :trans-version "20140605" :date "25-Aug-2014 11:22:14.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13639 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13639 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2888 :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 3222 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13639 :visit-id "06" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3000 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 2 0