Russell Croman Astrophotography  



Barnard's Galaxy

About This Photograph

Barnard's Galaxy, also known as NGC 6822, is a bit of a celestial oddball. It is an irregular galaxy about 1.6 million light years away in the constellation of Sagittarius. While it is small as galaxies go – only 7,000 light years across as compared to the Milky Way's 150,000 – and while it lacks the graceful arms of many "grand design" spiral galaxies, it is nevertheless sprinkled with many star-forming regions.


Technical Details

Optics:PlaneWave 14" f/7.2 CDK
Mount:Paramount ME II
Filters:Chroma RGB, H⍺, [O III]
Dates/Times:13 June - 11 July 2021
Location:RC-Astro South Observatory at ObsTech Observatorio El Sauce (Chile)
Exposure Details:RGB = 12.25:11.25:12.25 hours, H⍺, [O III] = 7.5:8 hours (51.25 hours total)
Acquisition:MaxImDL, ACP Expert
Processing:PixInsight, Photoshop