This is M1, the Crab Nebula. I took it over two mornings, starting at midnight or 1:00 and shooting until 6:00. I actually gathered 118 (300-second) images, but in the stacking I found that only 80 made the cut. Sky conditions were iffy this morning. You can very faintly see the pulsar in the center of the Crab.

Stellarvue 152 refractor, Nikon D810A camera, Astro-Physics Mach2 tracking mount

Processed the stars and nebulosity separately in PixInsight and Photoshop. Mostly just stretching for more detail.