Triple APOD - June 11, 2025: Bode & Cigar Galaxy (M82 & M81) By Allen Schultz All-Star Amateur Astronomy Photo of the Day - Click to Enlarge


Triple APOD - June 11, 2025: Bode & Cigar Galaxy (M82 & M81) By Allen Schultz

From Allen:

M81 and M82 was captured using HaOIII shots from 2025-05-05 to 2025-04-07 and RGB from 2025-05-01 to 2025-05-03.  There is about 11 hours of integration (4hrs RGB, 7hrs HaOIII) within the high light polluted sky.   The Ha (red palette) from the HaOIII filter really enhances the M82 (Cigar Galaxy) emissions from the core.

Location: Calgary backyard (Bortle 8/9)
Equipment:
Askar 103 APO with 0.8x reducer
Orion Mini 50mm guide scope
ZWO ASI585MC Pro camera
ZWO ASI120MM Mini
Celestron AVX mount
ZWO ASI Air Plus 256
Optolong L-Pro 2”
Antlia ALP-T Dualband 5nm Ha/OIII 2”
ZWO Filter Drawer

Imaging:
100 x 180s RBG subs culled from 140 subs (L-Pro filter)
89 x 300s HaOIII subs culled from 120 subs (HaOIII filter)

Processing:
Siril 1.2.4 for stacking, de-noise, background extraction, starnet
Graxpert 3.02 for de-noise
Affinity Photo 1.10.8 for post processing

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