Updated CTE photometric correction for WFC and HRC

Details Updated CTE photometric correction for WFC and HRC Updated CTE photometric correction for WFC and HRC

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009acs..rept....1c&link_type=abstract

Instrument Science Report ACS 2009-01, 26 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Acs, Advanced Camera For Surveys

Scientific paper

Observations for the ACS external CTE monitoring program were performed in Cycles 11 through 14 using both WFC and HRC. The aim of the program is to monitor the change in CTE in both cameras, and provide correction formulae for stellar photometry. Here we present the results of the data analysis, and we provide correction formulae for photometry on drizzled images for both HRC and WFC. The correction formulae we present here are significantly more accurate than those previously published, both because of the larger amount of data available and because of a more advanced analysis strategy. Observers are encouraged to use the new formulae to correct photometry, especially in presence of faint stars on a low sky background.

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