Now that the first epoch of Abell 2744 observations has completed, we are releasing the v1.0 data products. These are products include all 70 orbits on the main cluster with WFC3/IR (in F105W, F125W, F140W and F160W) and on the parallel field with ACS (in F435W, F606W, F814W).
The v1.0 data products are made from a complete reprocessing, including these steps:
- recalibration of exposures using the latest, up-to-date reference files and improving the bad pixel and cosmic ray rejection
- exposures in all filters are combined with other observations, as available, to make the deepest possible mosaics
- for ACS data, an additional “self-calibration” step is included, which improves both the calibration and alignment
- for WFC3 data, refined flagging and removal of pixels affected by observational anomalies, including persistence, detector defects, and time-variable sky background.
These complete products are expected to reach final depths of ~28.7 – 29th ABmag. Complete details on these specially crafted calibrations can be found in the Frontier Fields Science Data Pipeline and Products Readme file. We have made every effort to document all the special handling the Frontier Fields data is receiving, so that everyone can make use of what we have learned works best.
Mosaics are distortion-corrected, combined and registered to a common pixel scale, ready for you to use immediately! You can find all of these products at our MAST web page: http://archive.stsci.edu/prepds/frontier/.
Our data is ready to be mined for science!