Internal monitoring of ACS charge transfer efficiency

Details Internal monitoring of ACS charge transfer efficiency Internal monitoring of ACS charge transfer efficiency

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005acs..rept....9m&link_type=abstract

Instrument Science Report ACS 2005-03, 25 pages

Computer Science

Performance

Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Charge Transfer Efficiency Monitoring, Cte, Extended Pixel Edge Response, Eper, First Pixel Response, Fpr

Scientific paper

We present the results of over two years of inflight charge transfer efficiency (CTE) monitoring of the CCDs in the Advanced Camera for Surveys (ACS), based on two internal tests: Extended Pixel Edge Response (EPER), and First Pixel Response (FPR). In general, we find that CTE losses are worst at the lowest signal levels, and at each signal level, CTE declines linearly over time, at a rate which is consistent with results from external photometric tests (Riess, 2004). We compare our inflight results to similar pre-flight baseline data, and to predictions for inflight performance, which were based on radiation tests.

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