Dear colleagues,

We are pleased to announce the third 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 add an additional 16 orbits, bringing the total to 50 orbits obtained so far for Epoch 2 (and 120 orbits total for this cluster field) The additional observations are divided evenly between ACS F435W and F814W on the main cluster, and WFC3/IR F105W and F160W on the parallel field These mosaics have all been processed beyond the default pipeline calibration, including updated calibration for ACS and correction for time-variable sky background in WFC3/IR, and are all astrometrically aligned to the mosaics that were obtained during the previous observations of this target

The latest cumulative full-depth mosaics can all be obtained directly at the following links: * Latest mosaics: http://archive stsci edu/pub/hlsp/frontier/abell2744/images/hst/v0 5-current-epoch2/ * All mosaics: http://archive stsci edu/prepds/frontier/abell2744 html

More general information about the data for this project can be obtained from our Frontier Fields MAST archive website: * http://archive stsci edu/prepds/frontier/ as well as our main Frontier Fields HST project website: * http://www stsci edu/hst/campaigns/frontier-fields/ and our Frontier Fields astronomer's blog: * https://blogs stsci edu/hstff/

We hope that these high-level science products are useful for your research, and we welcome any suggestions or questions that you may have about them

Best regards, Anton Koekemoer and the STScI Frontier Fields Team http://archive stsci edu/prepds/frontier/ http://www stsci edu/hst/campaigns/frontier-fields/Contact

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