The Triangulum Galaxy

This is M33, the Triangulum Galaxy. I had taken 7 or 8 hours of data for this one in September, but I wasn't absolutely thrilled with how it turned out. So in the last couple of days, I got another 6 hours of this and stacked it all together.

StellarVue 152 mm refractor, Nikon D810A camera, Astro-physics Mach2 tracking mount. Guide scope, camera, and software

I processed this in PixInsight, stretching the galaxy separately from the stars. I used a couple of tools in PI, like masked stretch and HDR multi-scale transform, to help bring out the fainter parts of the galaxy without blowing out the core.