Ngc 891 (C23)

Thank you, registration 18 minutes, stack 25.

I stacked 15 hours of PI frames.

I support the question, I'm also curious! Really liked the photo!

Good day, I didn't see the comment. The shooting was done in ASI Studio, the weather was excellent at 7°C, the matrix was 9-10. I set the gain randomly; I don't set it between 0-100 because DSS doesn't accept frames and doesn't detect stars. The exposure time is like this due to the thick atmosphere; stars in the stack bloated to the size of soccer balls, plus micro-tracking errors at long exposures ruin the details.