Light Calibration

[Farzad_k]

Hi,

I just want to be sure if I am using the right process.

I figure there are six steps in pre-processing:

[1] integrate biases, integrate darks
[2] calibrate flats - remove bias and dark out of the flats
[3] integrate flats
[4] calibrate lights, get dark, bias and flat out of them
[5] align lights
[6] integrate lights

Since in step 2 when flats cleaned of biases and darks, then in step 4 when lights are calibrated against biases and darks, the calibration of flats should be kept unchecked. Is this correct?

Thanks

[pfile]

that is correct. if the master flat is precalibrated, then the master flat should not be calibrated at the time ImageCalibration is run on the light frames.

rob

[chris.bailey]

You might want to consider a step 4a Cosmetic Correction, especially if you are scaling darks and/or don't have well dithered light frames.

Chris

[bulrichl]

and if you are imaging with a digital single lens reflex (DSLR) or a one-shot color (OSC) camera, you have to debayer just before aligning the images.

Bernd