0 Assigned ID: 293 ----- Attempting Submission 1 (Thu Mar 05 20:25:28 GMT 2020) ----- HST Phase I Proposal 293 successfully submitted. Receipt: # 293-1 ----- Attempting Submission 2 (Thu Mar 05 22:34:55 GMT 2020) ----- HST Phase I Proposal 293 successfully submitted. Receipt: # 293-2 ----- Attempting Submission 3 (Fri Mar 06 15:21:38 GMT 2020) ----- HST Phase I Proposal 293 successfully submitted. Receipt: # 293-3 ----- Attempting Submission 4 (Fri Mar 06 18:48:14 GMT 2020) ----- This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. This pattern is not used in this proposal. ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN ORBITAL VISIBILITY OVERRUN Changed scheduling due to HST safe mode delaying observation. -1546544951 ----- Attempting Submission 1 (Wed Jun 24 16:30:05 GMT 2020) ----- ----- Attempting Submission 2 (Tue Jul 07 08:45:22 GMT 2020) ----- ----- Attempting Submission 3 (Wed Aug 17 15:12:01 GMT 2022) ----- ----- Attempting Submission 4 (Wed Aug 24 14:07:29 GMT 2022) ----- ----- Attempting Submission 5 (Sat Sep 03 22:10:40 GMT 2022) ----- HST Phase II Proposal 16264 successfully submitted. Receipt: # 16264-5 ----- Attempting Submission 6 (Wed Sep 07 14:24:13 GMT 2022) ----- ----- Attempting Submission 7 (Fri Apr 14 02:26:55 GMT 2023) ----- ----- Attempting Submission 8 (Fri Apr 14 07:12:30 GMT 2023) ----- ----- Attempting Submission 9 (Tue Nov 21 00:12:05 GMT 2023) ----- ----- Attempting Submission 10 (Wed Dec 06 18:52:42 GMT 2023) ----- ----- Attempting Submission 11 (Thu Jan 11 19:28:34 GMT 2024) ----- Some warnings for the general visits created in the original Phase II, small visibility overrun to be resolved upon scheduling. By measuring the time delay between any pair of gravitationally lensed images, we can constrain the expansion rate of the universe and test dark energy models. Variable quasars have been used in this way with great success, and it is now possible to extend this technique to gravitationally lensed supernovae (SNe). These targets are especially promising because their predictable light curves can deliver precise time delay measurements in a relatively short period. Existing surveys have a realistic chance of discovering at least one new lensed SN within the next 1-3 years. This long-term target of opportunity program will provide the high-resolution follow-up imaging that is critical for measuring a lensed SN time delay. This program will enable a time delay measurement with uncertainty of approximately +-3 days, leading to a new measurement of H0 with a precision of 5-10% for a flat LambdaCDM cosmology---comparable to the best constraints achieved with lensed quasars. Future wide-field surveys (e.g., LSST, WFIRST) could deliver hundreds of lensed SN time delays, but the sample size will be limited by follow-up resources. This pilot study is an important step to establish lensed SNe as a competitive cosmological tool in the coming wide-field survey era. When a lensed SN candidate is discovered, this ToO program will provide a follow-up campaign to measure the time delay. We will trigger a ToO (either disruptive or non-disruptive, depending on the situation), activating a series of approximately 16 HST visits, totaling up to 22 orbits of broad- and medium-band imaging. The exact specification of these visits will be determined based on the sky location, visibility, redshift, the gravitational lens, the SN itself, and the availability of other follow-up resources. For the initial Phase II submission we provide a range of plausible configurations including all of the expected instrument+filter combinations. In each visit we will include 2 to 3 filters of ACS or WFC3 imaging, with no parallel instrument. The dither pattern will be selected to optimize the sampling of the SN and lens, and may need to be adjusted from the defaults specified in the initial phase II submission. Every visit will include well-defined time constraints to ensure fairly even sampling of the SN light curve. We will generally be able to provide scheduling flexibility on the order of +-3 days for each visit, along with a minimum separation between visits. For some possible targets we will include medium-band WFC3-IR imaging, paired with complementary broad-band imaging in visits that will have harder time constraints to ensure that the medium- and broad-band imaging is approximately coincident in time. The LensWatch team brings together researchers with deep experience using HST for SN science and those with expertise in gravitational lensing studies. We are engaged in complementary programs that have led to the most precise measurements of the Hubble constant to date, both through the Cepheid+SNIa distance ladder (Riess et al. 2019), and using strongly-lensed quasar time delays (see, e.g., Suyu et al. 2017). To provide lensed SN targets that this program can follow, we are currently leading several ground-based lensed SN discovery programs. From >25 previous HST programs, our team members have published over 300 journal articles on these topics. * Supernovae: [Canameras, Christensen, Foley, Gall, Hjorth, Jha, McCully, Nonino, Perez-Fournon, Pierel, Riess, Rodney, Soraisam, Strolger, Taubenberger, Wojtak] Several co-investigators and the PI S. Rodney have led the SN discovery and follow-up component for multi-cycle HST treasury programs over the last two decades (GOODS, PANS, CLASH, CANDELS, Frontier Fields). Some recent results most directly related to this proposal include analysis of high-redshift SNe (Rodney et al. 2014), Type Ia SN cosmology (Riess et al. 2018), lens-magnified transients (Rodney et al. 2018), and the multiply-imaged SN Refsdal (Kelly et al. 2015, Rodney et al. 2016). * Gravitational Lensing: [Agnello, Bolton, Courbin, Huang, Li, Marques-Chaves, McCully, Moustakas, Shu, Suyu, Treu] Co-Is include leaders of HST programs that defined the dominant catalogs of galaxy-scale strong-lenses (SLACS, BELLS, SWELLS) and cluster-scale lenses (CLASH, GLASS, HFF). We have led studies of strongly lensed quasars, measuring time delays (COSMOGRAIL) and determining Hubble constant constraints (H0LiCOW). Recent highlights include time-delay measurements of lensed quasars leading to an H0 measurement with 3% precision (Suyu et al. 2017, Bonvin et al. 2017, Birrer et al. 2019) * Complementary Search and Follow-up Programs: [Chakrabarti, Courbin, Huang,McCully, Nonino, Perez-Fournon, Suyu] Co-Is on this program have secured observing time on the Liverpool Telescope, the LCOGT, and the VLT Survey Telescope to search for lensed SNe from the ground. Co-Is have also secured time and continue to propose for follow-up observations on the VLT, GTC, Gemini and Keck for ground-based imaging and spectroscopic observations that would be highly complementary to this HST imaging program. Similarly, we continue to pursue high-resolution imaging and spectroscopic survey programs to confirm more strong lenses for use in future targeted lensed SN searches. Large Scale Structure of the Universe Galaxies 0 false false false false false false false false SUPPORTED EXT-STAR SUPERNOVA J2000 EXT-STAR SUPERNOVA TYPE IA NO J2000 EXT-STAR SUPERNOVA NO IMAGE-2B J2000 EXT-STAR SUPERNOVA NO IMAGE-2A J2000 EXT-STAR SUPERNOVA NO IMAGE-2C J2000 EXT-STAR SUPERNOVA J2000 EXT-STAR SUPERNOVA J2000 EXT-STAR GRAVITATIONAL LENS SUPERNOVA To-be-discovered. Strongly-lensed SN with predicted time delay >20 days EXT-STAR GRAVITATIONAL LENS SUPERNOVA To-be-discovered. Strongly-lensed SN with predicted time delay >20 days ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F475W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F625W ACS/WFC Imaging No No F775W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F850LP WFC3/IR Imaging No No F127M WFC3/IR Imaging No No F139M WFC3/IR Imaging No No F153M WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F775W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F850LP POS-TARG DITHER DITHER 4 5.183 WFC3-IR-DITHER-BOX-MIN false 74.653 true 0.365 0.572 2 41.859 POS-TARG WFC3-IR-DITHER-BLOB 18.528 1 false POS-TARG DITHER 0.572 LINE 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 2 false POS-TARG DITHER 0.636 LINE false false 2 41.788 WFC3-IR-DITHER-LINE 3 false POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 4 false POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 5 false POS-TARG DITHER 0.145 LINE false false 2 46.84 WFC3-UVIS-DITHER-LINE 6 false POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 7 false POS-TARG DITHER 0.262 LINE 0.192 false false 68.14 4 18.39 ACS-WFC-DITHER-BOX 8 false POS-TARG DITHER 3.034 LINE false false 2 85.29 ACS-WFC-DITHER-LINE 9 false 1661349917641 Timing link suitability includes constraints ([12 After 11 by 10.0 to 14.0 days]) The scheduling data was generated by CASM 30.3. 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CASM was run in Phase II mode. 3 short WFC3-IR F110W and 3 short WFC3-IR F160W exposures of new source in MACS-J2129 field. 1664626755000 85.60210994276082 (Tic-Visit :proposal-id 16264 :visit-id "13" :proposal-version -1 :trans-version "20220630" :date "24-Aug-2022 10:05:19.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1392720 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16264 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16264 :visit-id "13" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2546 :al-overhead-at-end 0 :internal-dur-at-end 481 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2918 :pcs-gap 0 ) false 1 1 1681425128806 Timing link suitability includes constraints ([14 After 13 by 10.0 to 14.0 days] [15 After 14 by 10.0 to 14.0 days]) The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. 3 short WFC3-IR F110W and 3 short WFC3-IR F160W exposures of new source in MACS-J2129 field. 1665649414000 83.5 (Tic-Visit :proposal-id 16264 :visit-id "14" :proposal-version -1 :trans-version "20220630" :date "13-Apr-2023 15:32:08.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1392720 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16264 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16264 :visit-id "14" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2546 :al-overhead-at-end 0 :internal-dur-at-end 481 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2918 :pcs-gap 0 ) false 1 1 1661349921327 Timing link suitability includes constraints ([15 After 14 by 10.0 to 14.0 days]) The scheduling data was generated by CASM 30.3. 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CASM was run in Phase II mode. 3 filters, 4 point dither pattern. 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