Image Calibration

Image Calibration

This feature is requested by users that may have CCD defects such as hot pixels which FocusMax may attempt to use utilize for focusing. Enable image calibration which is found on the Features tab and follow this procedure:

MaxIm image calibration

1.Create a set of dark & bias frames at the binning used for the initial image and autofocus sub-frame images (see Target Star Bin and Focus Bin in Preferences/Autofocus).

2.The Dark frame exposures should span the range which FocusMax may use (0.1, 1, 5, 10 sec...). You may want to create a set of calibration frames from 1x1 through 4x4 just in case you decide to change bin size.

3.Save the calibration frames to a directory

4.Load the saved images into MaxIm using menu/Process/Set Calibration

MaxIm will extract the appropriate image and position in the calibration image to calibrate the FocusMax frames for the initial target star section and autofocus sub-frame images.

TheSkyX Camera Addon / CCDSoft image calibration

Image Reduction will use 'AutoDark' with each light frame is taken.