spacer link to MAST page spacer logo image spacer

The Hubble Space Telescope Frontier Fields

Abell 2744

MACS J0416.1-2403

MACS J0717.5+3745

MACS J1149.5+2223

Abell S1063

Abell 370

This is the primary Archive website for accessing all the Hubble Space Telescope Frontier Fields program data, which is a new initiative of six deep fields centered on strong lensing galaxy clusters (drawn from Abell et al. 1989) and the MACS survey (Ebeling et al. 2001), in parallel with six deep "blank fields" adjacent to these clusters. Please refer also to the main Frontier Fields project website where additional information is presented about the project, the team, and links to a blog. The program devotes 140 orbits to each cluster/blank field pair, imaging them to AB ≈ 28.7-29 mag with ACS (F435W, F606W, F814W) and and WFC3/IR (F105W, F125W, F140W, F160W). We are providing a variety of products for these clusters, including:

Also please visit the Spitzer Frontier Fields website for access to all the Spitzer data on the Frontier Fields.

Latest news:

July 10, 2014: Fourth v0.5 release of Epoch 2 HST mosaics for Abell 2744

We are pleased to announce the fourth v0.5 release of Epoch 2 HST mosaics obtained on the cluster Abell 2744, from the observations of this target from our Frontier Fields program ID 13495 (P.I.: J. Lotz). These mosaics complete the full depth obtained on the second epoch of this cluster, adding a further 20 orbits of ACS imaging in F435W and F814W on the main cluster, along with the same number of orbits of WFC3/IR imaging in F105W and F160W on the parallel field, and completing the total exposure time of 70 orbits on each field for this epoch, and 140 orbits total for this cluster. In addition to the standard ACS and WFC3/IR mosaics derived from the default calacs and calwf3 calibration products, we also make available ACS mosaics that include self-calibration to improve low-level noise, and WFC3/IR mosaics that include correction for time-variable sky background. All the mosaics are astrometrically aligned, as before, to the mosaics that were obtained during the previous observations of this field. We are producing the fully reprocessed v1.0 mosaics during the coming weeks, but are making available these fast-turnaround science-quality v0.5 mosaics at the moment, in order to facilitate immediate science by the community. Further details are provided in the readme file, which can be obtained along with all the mosaics at the following link:

Current HST observing schedule for these fields: (click the graphic for an interactive version):

Access to all HST data on these fields:

  • Via your browser: is the starting navigation point to all the data on these clusters.
  • FTP:
    ftp and login as anonymous.
    cd /pub/hlsp/frontier
    From there you can navigate through the site to find the field and data of interest.
  • WGET
    You can download whole directories of data using wget commands like:
    wget -nH --cut-dirs=5 -r -l0 -c -N -np -R 'index*' -erobots=off

Cluster Name z Cluster Parallel Field HST
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 Abell 2744 Display
MACSJ0416.1-2403 0.396 04:16:08.9 -24:04:28.7 04:16:33.1 -24:06:48.7 MACSJ0416-2403 Display
Year 2:
MACSJ0717.5+3745 0.545 07:17:34.0 +37:44:49.0 07:17:17.0 +37:49:47.3 MACSJ0717+3745 Display
MACSJ1149.5+2223 0.543 11:49:36.3 +22:23:58.1 11:49:40.5 +22:18:02.3 MACSJ1149+2223 Display
Year 3:
Abell S1063
0.348 22:48:44.4 -44:31:48.5 22:49:17.7 -44:32:43.8 Abell S1063 Display
Abell 370 0.375 02:39:52.9 -01:34:36.5 02:40:13.4 -01:37:32.8 Abell 370 Display


Abell, G. O., Corwin, H. G., Jr., & Olowin, R. P. 1989, ApJS, 701, 1

Ebeling, H., Edge, A. C., Bohringer, H. et al. 1998, MNRAS, 301, 881

Ebeling, H., Edge, A. C. & Henry, J. P. 2001, ApJ, 553, 668