Dear colleagues,

We are pleased to announce the Version 1.0 release of Epoch 2 of Abell
2744, after the completion of all the ACS and WFC3/IR imaging on the
main cluster and parallel field from our Frontier Fields program (13495,
PI: J. Lotz), in addition to imaging from programs 11689 (PI: R. Dupke),
13386 (PI: S. Rodney), and 13389 (PI: B. Siana). These v1.0 mosaics have
been fully recalibrated relative to the v0.5 mosaics that we released
regularly throughout the course of this epoch during May, June and July
2014. For ACS, the v1.0 mosaics incorporate new bias and dark current
reference files, along with CTE correction and bias destriping, and also
include a set of mosaics that have been processed with the new selfcal
approach to better account for the low-level dark current structure. The
WFC3/IR v1.0 mosaics have improved masking for persistence and bad
pixels, and in addition include a set of mosaics that have been
corrected for time-variable sky emission that can occur during the orbit
and can otherwise impact the up-the-ramp count-rate fitting if not
properly corrected. Further details are provided in the readme file,
which can be obtained along with all the mosaics at the following location:

* Latest mosaics:
http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/517399856984/list.admin/aus-city.com/
* All mosaics: http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/471660510997/list.admin/aus-city.com/

More general information about the data for this project can be obtained
from our Frontier Fields MAST archive website:
* http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/132255990249/list.admin/aus-city.com/
as well as our main Frontier Fields HST project website:
* http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/908365177550/list.admin/aus-city.com/
and our Frontier Fields astronomer's blog and other social media:
* http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/240744315739/list.admin/aus-city.com/
* http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/668214525529/list.admin/aus-city.com/
* http://www.aus-city.com/cgi-bin/dada/mail.cgi/r/HST_REPORTS/872456824388/list.admin/aus-city.com/

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