Just want to make sure I understand how to properly use dark libraries.
I use APT for capture and the camera is an ASI533MC Pro
Please correct me if I'm wrong.
Step 1 - Take dark frames consisting of groups of specific exposure times using the same temperature, i.e -10. i.e 30sec, 60sec, 90sec, 120sec, and on.
Step 2 - Calibrate and Integrate each group to create a master dark for each group. ( i use pixinsight )
I am using down time due to bad weather to create these libraries. I am going to get 3 hours of integration time for each group
Here are my questions :
If, for example, I have an imaging session where I was only able to get 2 hours integration time on a particular target, is it ok to use the master dark I created with the 3 hour integration time, or would I need to select the number of darks that would be appropriate for 2 hours integration time and recalibrate/reintegrate to create a new master dark. I try to use a quantity of 50% darks compared to the number of light frames taken. i.e 100 lights/50 darks.
If in the case it will be correct to reintegrate/recalibrate for the 2 hour session, is there any degradation of the image files if I copy those files into another directory to be recalibrated.
Is there a specific amount of time I can continue to use a specific master dark file, or will I need to refresh my libraries occasionally by taking a fresh set of darks.
I hope I'm making sense with these questions. If it sounds like I have a handle on this procedure, great. But please set me straight if I'm wrong. Thanks for the replies in advance