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Old 09-10-2019, 08:29 PM
Martin Pugh
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Martin Pugh is offline
 
Join Date: Nov 2006
Location: Canberra, Australia
Posts: 1,271
OSC - Image calibration method

Hi folks.
This switch to OSC cameras has been rather bumpy so I am hoping some long term users can answer my questions:
Darks, Bias and Flats - do you:
a. debayer all of the individual files, then stack to create your masters to then calibrate a light frame, then debayer the light frame or
b. stack the raw images into master calibration frames that contains the bayer matrix, calibrate a light frame, then debayer the light frame

or some other approach?

Next:
It appears rather critical that your bias/darks/flats are taken at the same gain, offset and temp as your light frames.

So while I can gauge the gain level from the specification charts supplied with the camera (depending on what read noise, dynamic range and full well I am aiming for), I guess I am completely out of luck when it comes to deciding what my offset value should be.

certainly looking forward to some insight into this lot.

cheers
Martin
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