NGC6946 Fireworks Galaxy
The Fireworks Galaxy is located 25 million light-years from Earth and stretches 40,000 light-years across. It's about 1/3 the size of our own Milky Way Galaxy, and contains dark nebula lanes and several supernova remnants. North is at the top.

Scope/Mount: TS-Optics PhotoLine 130mm F7 APO Refractor with Astro-Tech AT2FF Field-flattener, Celestron CI-700 Mount
Camera: ZWO ASI1600MMC monochrome with ZWO LRGB filters
Guiding: QHY5L-IIM through Orion Thin OAG, PHD guiding software
Exposure: L (70) 120 sec @ gain=139, RGB: each channel (10) 120 sec @ gain=200
Software: Nebulosity, PixInsight
Comment: 09-19-2020, Tierra del Sol, CA, good conditions.