Barnard 33 / NGC 2024 · December 8, 2025 · Backyard, Bortle 6
Horsehead & Flame Nebulae
Two iconic dark-nebula targets in one frame. The Horsehead is a molecular cloud silhouetted against the pink Ha emission of IC 434. The Flame on the left gets its dark lane from a wall of dust blocking the stellar radiation behind it.
Gear
scope William Optics RedCat 71 camera ZWO ASI2600MC Pro mount ZWO AM5N guiding ZWO ASI220MM Mini + OAG filters Optolong L-eNhance
Exposure · Sky
subs 96 × 240s total 6h 24m gain/temp 100 · −10°C bortle 6 ra / dec 05h 40m 59s / −02° 27′ 30″
Processing notes
Stacked in Siril, StarXTerminator for star separation, aggressive Ha stretch, recomposite.