Finally let’s make the master dark, first remove the flats of the list and unselect the master bias, since we don’t want to subtract the master bias from the darks.
2) Calibrate master dark settings
I’ll use median again. Again if you have more than 10-20 darks, use average and outlier rejection. Since one of the darks is 350 seconds and the others are 300 seconds, I’ll choose to include this 350s dark into the masterdark.
We can do this by changing the exposure tolerance to 25%. So all frames with exposure tims within 25% of each other will be considered the same for creation of the master dark. Al darks outside of this range would be otherwise used to create other masterdarks for other exposure times.
Again click on create calibration frames and check the statistics of your master dark.
The master dark can be shown nicely again with DDP on. Don’t forget to adjust the White and gamma sliders to default settings. See screenshot. Looking at the master dark, it’s quite obvious the sensor has a lot of bad pixels. So the high value in the Bad Pixel Map of hot pixels seems to be quite correct.
