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B33 Horsehead Nebula

03 Feb 2025

I had a few clear nights with little moon so I thought I’d try the Horsehead Nebula again. I was proud of what I achieve last time but I thought I could do better now with better equipment and lots more experience. This time, I spent longer on RGB integration and less time on narrowband and only used the Ha part, discarding the OIII. Anyway, I’m pleased with the result. Perhaps I could spend longer on it to clean it up a little, but I’m happy for now. There’s not long left before the Milky Way disappears for a while and all I’ll have are galaxies, so I’d like to make the most of it.

William Optics GT71, 0.8 reducer, EXOS2 with Onstep, HaRGB with UV filter and SV220 filter, IMX585, guided, 3hrs Ha, 6hrs RGB