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M81 is a bright spiral galaxy in Ursa Major about half the size of the Milky Way.

Imaging Details

• Workflow: LRGB+HA
• Luminance: 120*60 seconds
• Red: 90*90 seconds
• Green: 90*90 seconds
• Blue: 67*90 seconds
• HA: 28*600 seconds
• Imaging Dates:
  • 2/6/2020
  • 2/29/2020
  • 3/21/2020
  • 3/30/2020
  • 3/31/2020

Narrow-band Images

Notes:

 Had some severe vignetting on the edges for a few filters, most likely due to imaging during a 3/4 full moon. Was able to remove with PixInsight and cropping.