M20 Trifid Nebula
The M20 Trifid Nebula is a star-forming region located over 4,000 light-years from Earth. The object sports an unusual combination of emission nebula (red), reflection nebula (blue), dark nebula (black), along with an open cluster of stars. For this image, I decided to also capture the Ha regions that surround this nebula (light brown) by using an Ha filter.

Scope/Mount: TS-Optics PhotoLine 130mm F7 APO Refractor with Astro-Tech AREDT30 Focal-Reducer/Field-flattener, Celestron CI-700 Mount
Camera: ZWO ASI1600MMC monochrome with ZWO LRGB and Ha, Oiii, Sii filters
Guiding: QHY5L-IIM through Orion Thin OAG, PHD guiding software
Exposure: L:(12) 300 secs @ gain=300, Ha:(12) 300 secs @ gain=300, RGB: each channel (10) 120 sec @ gain=200
Software: Nebulosity, NoiseXterminator, Pixinsight
Comment: 06-27-2025, Tierra del Sol, CA, somewhat smokey conditions. Palette = (L+H)RGB.