M108 Galaxy in Ursa Major, TEC140

Spiral Galaxy M108 in Ursa Major with TEC140 and Atik 460

M108 is a galaxy about 45 million light years away in the constellation of Ursa Major.  It is sometimes called the surfboard galaxy because of its resemblance to a surfboard.  Note the huge number of tiny, distant galaxies in the background.  These are hundreds and in some cases up to two billion light years away from us.

Technical Information

I imaged M108 from my backyard observatory in Nottingham, UK on 4-5 April 2021 (two imaging sessions) when M108 was almost directly overhead.  Conditions were very cold and frosty with good seeing and transparency. I used my TEC140 refractor and Atik 460 CCD camera with Astrodon E series Gen LRGB filters (1.25″).  There is almost 9.5 hours of data in this image consisting of:

Lum > 42 x 300s; Red > 24 x 300s; Green > 24x300s; Blue 24 x 300s

Everything was binned 1×1.  

Image data was captured using Sequence Generator Pro software and the equipment was was guided using OAG on my MESU 200 mount.  Processed with PixInsight.

I hope you like it!

M108 with TEC 140 Refractor
M108 in Ursa Major with TEC140

Full size image here (opens in new tab).

M108 Annotated
Annotated Version
M108 FindingChart
Finder chart

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