LBN 683 (also known as Lynd’s Bright Nebula 683) is located in the northern region of Ursa Major & just west of the galaxies M81 & M82. LBN 683 is a condensation of the dust that thinly permeates the entire area. Known as High Galactic Cirrus (HGC) or Integrated Flux Nebula (IFN), this dust is faintly illuminated by the light of all the stars in our galaxy. Bluish areas are where the dust is more strongly illuminated by nearby stars.
Many images of the two galaxies M81 & M82 show traces of the Galactic Cirrus, however this wider field view captures the extended complexity of the Galactic Cirrus, which while faint, can be captured in long-exposure images, & extends across much of this Northern region of the sky.

Telescope: Askar FRA300pro f5
Mount: Astro Physics Mach-1
Camera: ZWO ASI6200MC pro
Guider: ZWO Off-Axis-Guider / ZWO120MM Mini
Filters: None. Integrated ZWO UV/IR Cut Filter Cover

70×5 mins = 350 mins

Total Imaging Time: 5h 50m

Data Imaged remotely on 3 nights during April 2025.
Data acquisition & Processing by David Churchill.

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