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NGC 6822 (Barnard's Galaxy)   [obsolete]

Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 12 x 5min @ ISO 1600
Total Exposure: 1hrs, 0min
Date: 8/12/2004, ~12:30am PDT
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: None
Guiding: Manual through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, flat field, registration, Kappa-Sigma stacking
  • Photoshop: Levels, Noise reduction, cropping, JPG conversion

Image Description:

NGC 6822, also known as Barnard's Galaxy, is an irregular (as opposed to spiral or elliptical) galaxy in the constellation of Sagittarius. The seeing and transparency weren't very good the night this was shot, but the image came out ok nonetheless. NGC 6822, a member of the Local Group, is a relatively close neighbor of our own Milky Way galaxy, along with M31 (Andromeda) and others. The blue nebulous regions above Barnard's Galaxy (more visible in the higher-resolution image) are, from left to right: IC 1308, H25 V, and H25 I (Bubble Nebula). North is up.