Spitzer Frontier Fields Overview
Frontier Fields Overview Frontier Fields Summaries Frontier Fields Data Access Frontier Fields Cutouts


The Frontier Fields is a Spitzer and HST Director's Discretionary program of six deep fields centered on strong lensing galaxy clusters in parallel with six deep "blank fields". These are the deepest observations of clusters and their lensed galaxies ever obtained by Spitzer, and the second deepest observations of blank fields. Here we provide access to the second release of the Spitzer Frontier Fields data, which comprises the Director's Discretionary Time (DDT) and public archival data available for the Frontier Fields clusters as of Dec 1, 2015. The second data release supercedes the first data release and features improved reductions with better artifact correction and deeper data.

If you use Frontier Fields data, please cite both the journal article Lotz et al. (2017) and the dataset Digital Object Identifier (DOI): 10.26131/IRSA5.

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Data Set Characteristics

Data ProductDescriptionData Access
Images Spitzer/IRAC 3.6, 4.5, 5.8, 8 micron
Spitzer/MIPS 24 micron
HST ACS & WFC3 Mikulski Archive for Space Telescopes (MAST)

Frontier Fields Documentation

Delivery Document
The following Spitzer Program IDs (PIDs) were used to produce the Frontier Fields mosaics:
  • Abell 370: 137, 10171, 60034
  • Abell 2744: 83, 90257
  • MACS J0416.1-2403: 80168, 90258
  • MACS J0717.5+3745: 40652, 60034, 90009, 90259
  • MACS J1149.5+2223: 60034, 90009, 90260
  • RXC J2248.7-4431: 83, 10170, 60034

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