I'm wondering about how to most properly make a bias or dark master frame. When working with light frames, it is important to adjust the rejection parameters so that only the problematic pixels are rejected. This creates a rejection_high frame that is sparsely populated with pixels rather than an image full of 'snow'.
When creating dark/bias frames, do we do the same? Or is it best to leave the rejection parameters at default, even when working with large numbers of frames (like 300 bias frames)?
While we are at it, the page on this website about master calibration frames (
http://www.pixinsight.com/tutorials/master-frames/index.html) says to use 'No Normalization' for pixel rejection, but I have also heard (from Vince Peris) that we should be choosing 'Scale and zero offset'. Which is correct?
Thank you for all input
Mike
