The Cave Nebula under Bortle 7 skies from my garden in Austin, Texas. This large but dim target is tough to image from a light polluted city. I wasn't happy with my first version just over a jear ago. Some dry clear weather with only a first quarter moon gave me a chance to get another night of data and reprocess this image. I'm pleasd with the result. I'd like to get enough data so that I could 2x drizzle stack for more resolution, but that will require many more nights fo data.

18 hours of #NBOSC exposures on 2025-10-02, 2024-07-17, & 14 under Bortle 7 skies from Austin, Texas, rendered in a modified HOO palate, #HOhO. WO RedCat 250/51mm, L-Ultimate dual NB filter, ASI533 MC camera, ASIAIR Plus controller, AM5N mount.

218 5' exposures stacked and processed in PixInsight with RC-Astro and SetiAstro tools. Final exp and crop in Affinity Photo