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HST Frontier Fields
High-Magnification
Cluster Candidate List

The candidates were selected primarily based on their lensing properties. They are currently being vetted for other considerations. Comments and suggestions are welcome -- please send to frontierfields@stsci.edu.

Cluster z RA DEC
Abell 370 0.37 02:39:52.8 -01:34:36
MACSJ0329.6-0211 0.45 03:29:40.3 -02:11:42
MACSJ0416.1-2403 0.42 04:16:08.4 -24:04:21
MACSJ0451.0+0006 0.429 04:51:54.6 +00:06:17
MACSJ0717.5+3745 0.545 07:17:35.6 +37:44:44
MACSJ0744.9+3927 0.686 07:44:52.8 +39:27:24
MACSJ1149.5+2223 0.543 11:49:35.7 +22:23:55
MACSJ1423.8+2404 0.54 14:23:48.3 +24:04:47
Abell 2744 0.308 00:14:23.4 -30:23:26
MACSJ0257-2325 0.505 02:57:08.8 -23:26:03
MACSJ0520.7-1328 0.340 05:20:42.0 -13:28:48

In addition to their lensing properties, we are weighing the following additional criteria:

Other candidates that have been considered but eliminated include the following:

The final two clusters will not be observed with HST until Cycle 23, but need to be observed with Spitzer before the end of its mission (nominally the end of 2014). Our current top contenders for the last two fields are MACS0329.6-2011, MACS0451.0+0006, AbellS1063, MACSJ1149.5+2223, MACSJ1423.8+2404, and MACSJ0257.0-2209. Please feel free to email us at frontierfields@stsci.edu with any additional information.