Frontier Fields

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.

IRSA hosts the Spitzer portion of the Frontier Fields data set. For the HST Frontier Fields data, see MAST.
Target Selection Single Object
(Name or Coords)
Table Upload
(Multi Object) Instructions
Size (deg):
[maximum 12.5]
Images must cover coordinate
Coordinate Examples:
  • 3.5798284 -30.3882985 eq
  • 349.48265975 -59.93367235 ga
  • Abell370
Default: Equatorial J2000
Search the Frontier Fields interactively:
Abell 370 Abell 2744 MACS J0416.1-2403
MACS J0717.5+3745 MACS J1149.5+2223 RXC J2248.7-4431
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
Access all the Spitzer Legacy datasets at IRSA.
Click here for more information and instructions on using Atlas Instructions
Also available is a Program Interface to Atlas.