RELICS Observations

188-orbit Hubble Treasury Program (PI Coe)

GO 14096 in HST Cycle 23
Oct. 9, 2015 - April 2017 (click for full schedule)
168 orbits for clusters + 20 orbits for supernova follow-up
(8 non-disruptive targets of opportunity)
46 fields lensed by 41 clusters: 5 orbits each
– 3 orbits ACS (minus archival) in F435W, F606W, F814W
– 2 orbits WFC3/IR in F105W, F125W, F140W, F160W
– same 7 filters as the Frontier Fields (0.4 – 1.7 µm)
18 parallel blank fields: 3 orbits each with WFC3/IR + UVIS F350LP
2 epochs separated by 25 – 60 days enabling a supernova search

All 41 clusters to required depths minus archival time in each of IRAC ch1 (3.2 – 3.9 µm) and ch2 (4.0 – 5.0 µm):
- GO 12005 (PI Bradač; 100 hours, 26 clusters, 1.2-hour depth)
- DDT 12123 (PI Soifer; 290 hours, 38 clusters, 5-hour depth)
Deeper imaging of ten clusters yieding most high-redshift candidates:
- DDT 13165 (PI Bradač; 167 hours, 3 clusters, 30-hour depth)
- DDT 13210 (PI Bradač; 55 hours, 1 cluster, 30-hour depth)
- GO 14017 (PI Bradač; 333 hours, 6 clusters, 30-hour depth)
- DDT 14281 (PI Bradač; 167 hours, 3 clusters, 30-hour depth)