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The program devoted 840 orbits to six cluster/blank field pairs (140 orbits each). The first four cluster/blank field pairs were observed with Director's Discretionary time in Cycles 21 and 22. After obtaining initial results from those data, observations of the final two cluster/blank field pairs were approved for execution in Cycle 23. For each cluster/parallel blank field, HST obtained WFC3/IR and ACS images simultaneously at a fixed position angle, then rolled and swapped camera positions roughly 6 months later.
The program devoted 140 orbits to each cluster/blank field pair, achieving 140-orbit depth for each field was designed to achieve depths of AB ≈ 28.7-29 mag in optical (ACS) and NIR (WFC3) imaging with 840 orbits. Limiting AB mags magnitudes are for 5-sigma detections of a point source within a 0.4" diameter aperture. For details, see Lotz et al. 2017.
| Cluster Name | z | Cluster | Parallel Field | HST FOV | Regions File | ||
|---|---|---|---|---|---|---|---|
| RA | Dec | RA | Dec | ||||
| Year 1: | |||||||
| Abell 2744 | 0.308 | 00:14:21.2 | -30:23:50.1 | 00:13:53.6 | -30:22:54.3 |
| regions |
| MACSJ0416.1-2403 | 0.396 | 04:16:08.9 | -24:04:28.7 | 04:16:33.1 | -24:06:48.7 |
| regions |
| Year 2: | |||||||
| MACSJ0717.5+3745 | 0.545 | 07:17:34.0 | +37:44:49.0 | 07:17:17.0 | +37:49:47.3 |
| regions |
| MACSJ1149.5+2223 | 0.543 | 11:49:36.3 | +22:23:58.1 | 11:49:40.5 | +22:18:02.3 |
| regions |
| Year 3: | |||||||
| Abell S1063 (RXCJ2248.7-4431) | 0.348 | 22:48:44.4 | -44:31:48.5 | 22:49:17.7 | -44:32:43.8 |
| regions |
| Abell 370 | 0.375 | 02:39:52.9 | -01:34:36.5 | 02:40:13.4 | -01:37:32.8 |
| regions |
...
