Flat Fields for Filter Wheel Offset Positions

Details Flat Fields for Filter Wheel Offset Positions Flat Fields for Filter Wheel Offset Positions

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acs..rept...11b&link_type=abstract

Instrument Science Report ACS 03-11, 11 pages

Physics

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

Scientific paper

The ACS filter wheel movements are accurate to one motor step, which leads to errors that exceed one percent in the flat fields over small regions for a few filter combinations. For seven of these filter modes on the WFC and six on HRC with the worst blemishes, flat fields are available as a function of filter wheel offset step; and the pipeline data processing will select the flat corresponding to the offset step of each observation.

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