M31

I was surprised myself why it turned out so green. The color temperature seemed correct (5500?). Maybe it's a camera glitch. To me, it adds some kind of style. Otherwise, the only interesting thing about the photo is what it was taken with.

Are you saying this is a single star?

I , what is that vertical scratch running from bottom to top right in the center of the frame?

This is a satellite.

I think I understand. By adjusting the color temperature, I can make it green. It seems that during the conversion from RAW, this second color slider shifted, and I didn't notice.

No, of course not.