>>4341373>>4341377Another regular dude here.
Exif in the pic, bottom-left. Original size 6000x4000.
Yeah, your ISO is way too high, but depending on what you want to capture sometimes you just gotta. My camera was riding on top of a telescope with a clock drive, so no streaking. Swapping ISO for time (6 minutes here) is a huge bonus. When stars are sharp, the light concentrates and you get more stars. However, I discovered that this camera's sensor heats up on long exposures, and the brightening/reddening at lower-left is what it does.
An option to mitigate the noise is to take another shot of exact same duration but with the lens cap on. Then you subtract that frame (which has nothing BUT noise) from your photo.
