ACS L - Flats for the WFC
نویسندگان
چکیده
The uniformity of the WFC detector response has been assessed by using multiple dithered pointings of moderately dense stellar fields. By placing the same star over different portions of the detector and measuring relative changes in brightness, local variations in the response of the detector have been measured. The original WFC laboratory flat fields produce photometric errors of to percent from corner-to-corner. New flat fields for 13 WFC filters have been delivered for use in the calibration pipeline. Initial results suggest the photometric response for a given star is now the same to ~1% for any position in the WFC field of view.
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