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How important is the array-location-dependent photometric correction for my data?
Posted by Seppo Laine on 29 January 2009 12:19 PM

The array-location photometric effect will go down as sqrt(number of dithers), so if it is a 4% effect to start with in channel 1, after combining five dithers into a mosaic it should be less than a 2% effect. Of course you can get even better results by mosaicking together the array location-dependent correction maps using the observed BCD positions in your observation and check the resulting correction mosaic to see how large the corrections in your final mosaic are.