flat issue

[bulrichl]

Sorry, there was still a mistake in my description of the light frame calibration with dark frame optimization (3b):

Calibrate the light frames with the MasterDark (both 'Calibrate' and 'Optimize' enabled) and the MasterFlat ('Calibrate' disabled).

This should read:
Calibrate the light frames with the MasterBias ('Calibrate' disabled), MasterDark (both 'Calibrate' and 'Optimize' enabled) and the MasterFlat ('Calibrate' disabled).

Bernd

[tristarcapt]

3a) If you don't want to try dark frame optimization, you need not capture bias frames at all. In this case, take flat darks (same ISO and exposure as the flat frames), integrate them to a MasterFlatDark and use this MasterFlatDark for flat frame calibration. Integrate the calibrated flat frames to the new MasterFlat.

Calibrate the light frames with the MasterDark (both 'Calibrate' and 'Optimize' disabled) and the MasterFlat ('Calibrate' disabled).

Bernd, one question please.  When I calibrate the Flats with the master FlatDark do I substitute the master FlatDark in for the MasterBIAS or the MasterDark in the Calibration process??  I've searched around and I can't seem to find an answer.

Scott

[bulrichl]

When calibrating the flats using the ImageCalibration process, you can either enable the 'Master Bias' section and select the MasterFlatDark with option 'Calibrate' disabled (in the appended screen sction: left) OR enable the 'Master Dark' section, select the MasterFlatDark with options 'Calibrate' and 'Optimize' disabled (in the appended screen sction: right). These settings are equivalent.

Bernd

[tristarcapt]

Thank You Bernd, I understand.

Scott