This program obtains full-frame, four-amp readout bias and dark frames as part of a daily monitor of the behavior of the WFC3/UVIS CCD. All images are post-flashed at a level of 12 e-; a separate program (14983) will be used to obtain un-flashed UVIS darks to monitor non-postflashed behavior. The frames from this proposal, in addition to those that are obtained as part of the WFC3/UVIS anneal program (14978), will be used to create superbias and superdark calibration reference files for the Calibration Reference Data System (CRDS) and monitor the evolution of hot pixels and dark current.This is the second of three daily monitoring programs of Cycle 25 (the others are 14980 and 14982). It covers March 9, 2018 through July 9, 2018. The combination of the three programs provides full coverage of Cycle 25.
- Pub Date:
- August 2017