CCD Stability Monitor

Details CCD Stability Monitor CCD Stability Monitor

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10737m&link_type=abstract

HST Proposal ID #10737

Computer Science

Hst Proposal Id #10737

Scientific paper

This program will verify that the low frequency flat fielding, the photometry, and the geometric distortion are stable in time and across the field of view of the CCD detectors. A moderately crowded stellar field in the cluster 47 Tuc is observed every three months with the HRC {at the cluster core} and WFC {6' West of the cluster core} using the full suite of broad and narrow band imaging filters. The positions and magnitudes of objects will be used to monitor local and large scale variations in the plate scale and the sensitivity of the detectors and to derive an independent measure of the detector CTE. An additional orbit is required to compare WFC observations taken at gain 1 with those taken at the new default gain 2.

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