Scott,
I also use SGPro, so that is not an issue. But I did not look closely at your frames before and I now realise that they are all bayer images. So there is no issue there of having mixed files.
The problem lies with the darks in that they are not dark at all and have significant mean values. I suggest that you take some more darks and make sure there are absolutely no light leaks anywhere, even around the camera so cover that with black cloth. But make sure there is some airflow for the cooling to take place. Don't wait for a clear sky wasting valuable imaging time, do the test indoors, but do it in the dark.
As for the other frames:
- The bias level looks good at about 1485 ADU
- Flats at about 11,000 are a bit dark and I would suggest aiming for 20,000 to 25,000. There are quite a lot of dust specs, most of which will be on the CCD cover slip, and if those are on the outside a clean may remove some of those. But even as bad as it looks the flat frame removes all of them.
- Lights also look fine, there are a number of hot pixels, but there are even in new cameras and calibrating with darks or using DefectMap plus CosmeticCorrection will sort those out.
I have an SX814 mono with a mean ADU of 2076 for 1800 second darks which is hardly an increase from 2070 ADU for 300 seconds I gave earlier, with a bias mean of 2045, so dark noise from my camera is negligible. Mine are done at -25C.
Looking at the FITS header of your dark it does seem to be a dark at 60 seconds, I was wondering if you had got the frames mixed up, but it does not look like you have.
So in conclusion the big question is, why is the light frame mean ADU at about 2400 and the dark at about 12,000 !! It does not make sense. All I can think of is that light is getting onto the sensor.
Mike
