Dear colleagues,

We are pleased to announce the release of the first new HST mosaics obtained for Epoch 2 on the cluster Abell 2744, from the first week of observations of the second epoch of this target from our Frontier Fields program ID 13495 (PI: J Lotz) In this second epoch, the orientation of HST enables the the instruments to be swapped, in order to begin obtaining WFC3/IR imaging on the parallel field, and new ACS/WFC imaging on the primary field These mosaics have all been processed beyond the default pipeline calibration, including alignment to the previous mosaics obtained during Epoch 1 of this target, and corrected for a variety of observational effects such as time-variable sky, scattered background light, and other effects Further details are provided in the readme file, which can be obtained along with all the mosaics at the following link:

http://archive stsci edu/pub/hlsp/frontier/abell2744/images/hst/v0 5-20140522/

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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