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Paper: Correction of Systematic Errors in Differential Photometry
Volume: 238, Astronomical Data Analysis Software and Systems X
Page: 373
Authors: Manfroid, J.; Royer, P.; Rauw, G.; Gosset, E.
Abstract: A common cause of errors in CCD differential photometry is an improper calibration of the array. The importance of these errors is evaluated for different cameras with fields between 3 and 30 arcminutes. The usual superflat illumination corrections based on night sky exposures are often found to be unsatisfactory. ``Photometric superflats'' based on stellar measurements are more reliable and should be used instead.
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