LBN 691

Molecular Clouds, Ursa Major

December 2025. Cave Creek Canyon Observatory, Arizona Sky Village

The Northern constellation of Ursa Major is well known due to it’s distinctive shape in the night sky. Within Ursa Major are extensive Molecular Clouds, vast regions of faint galactic cirrus or dust. Long exposures reveal the intricate structures within these. This image is dominated by Lynd’s Bright Nebula LBN 691 along with LBN 695 and 692.

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

106×5 mins = 530 mins

Total Imaging Time: 8h 50m

Data Imaged remotely on 8 nights during April, May & December, 2025.
Data acquisition & Processing by David Churchill.