Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21546207c&link_type=abstract
American Astronomical Society, AAS Meeting #215, #462.07; Bulletin of the American Astronomical Society, Vol. 42, p.494
Astronomy and Astrophysics
Astronomy
Scientific paper
We present results of the ACS/WFC external and internal charge transfer efficiency (CTE) SMOV programs, aimed at checking the status of the CTE after servicing mission 4. The measurements of photometric losses from imperfect parallel CTE in the WFC are consistent with the results of internal tests, and show a moderate increase with time. Photometric losses are worst for faint stars and low sky background. The new results are compared with the information obtained as part of the ACS external CTE monitoring programs, which were performed in Cycles 11 through 14, and with the expectations derived using the time-dependent CTE correction formula. In summary, we show that the CTE degradation is in agreement with the expected behavior.
Chiaberge Marco
Lim Paul
Mutchler Max
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