NGC 281 Pacman Nebula

Not the first attempt at it, this time I wanted to get the maximum resolution.... Focal length 640, camera pixel 2.0, the resolution came out to 0.64 arcseconds/pixel. The same frame was shot with my camera with a 3.76 pixel, a very noticeable loss of resolution. The downside of this camera is that it hardly sees oxygen, so it turns out to be a kind of hydrogen camera. No matter how much I tried to capture it properly, I couldn't, hence this photograph.