NGC 3953 - spiral galaxy in Ursa Major

Posted by tomdiana
on Tuesday, April 2, 2019

NGC 3953 lies approximately 56 million light years away in the constallation of Ursa Major. It spans 111,000 light years, slightly larger than our Milky Way. It is part of the Ursa Major North galaxy group of which M109 is a member. This galaxy is a barred spiral with a tightly wound structure surrounding the bar. It contains many young stars. Supernovae were observed in it in 2001 and 2206.

Many background galaxies are visible in this image.

Telescope: TS-Optics 10in. f/5 Newtonian
Camera: Modified Canon 650D; ISO 1600
Mount: iOptron CEM60
Guiding: QHY-5L-II M on 50mm guide scope
Exposures: 36 @ 5 min.
Processing: Images were focused using camera's live view with a Bahtinov mask. The subframes were captured, aligned, and combined with ImagesPlus. The composite image was adjusted in Photoshop. Topaz Detail and DeNoise were applied.
Notes: Shot from my backyard observatory in southeastern Minnesota on 3/30/19.
Note: Seeing was average. Temperature: 25F

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