Hit 500 stacked frames on a single target and the noise reduction blew my mind
After fighting with a cheap mount for months, I finally got a solid polar alignment in my Bortle 5 backyard and the detail in the Orion Nebula's core was insane compared to my old 50-frame attempts.
So what's the magic number then? You've clearly hit a wall at 200, but is that just for planetary stuff or does it hold for deep sky too? I've seen people swear by 500 frames for faint nebulae, but my computer would probably start crying.