컬러 CCD의 FLAT 처리

원샷CCD의 경우 FLAT 처리  ( DSLR 포함)

맥심DL의  set calibration 에서 FLAT 프레임에 Apply Boxcar Filter 체크박스를 반드시 체크한다.

The Apply Boxcar Filter setting is available only for groups of flat fields. When enabled, this setting causes MaxIm DL to apply a boxcar kernel filter to the master flat generated from the group. It is useful for raw images from DSLRs and one-shot color cameras, in which adjacent pixels vary in intensity due to the different filters covering them. If a flat field is applied normally MaxIm DL will calibrate out all of the color information. The solution is to blur the flat field slightly.