Quote:
Originally Posted by gregbradley
Yes that is bias drift and not a good thing. Rick was using a bias drift bias drift super bias that uses the overscan region of the sensor. I am not sure how you access the overscan region to do that. I am sure there is a tutorial somewhere on the PI site.
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The method for enabling overscan depends on the camera driver. In the case of my Apogee there is a "Digitize Overscan" check box in the Apogee GUI under Maxim.
The only software packages that I know support overscan calibration are PixInsight and Mira.
It's certainly worth considering on any camera that shows significant bias drift. Naskies had an SBIG camera with a KAF-8300 that also produced better results using it, so it's not just me
Cheers,
Rick.