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Dale Conrad | all galleries >> Dale Conrad's Astrophoto Gallery >> Gallery of Galaxys > NGC3992
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2011/02/19 D.M.Conrad

NGC3992

Sedro-Woolley, Wa.

This image of NGC-3992 is a 100% crop from NGC-3992/NGC-3953 with a field of view of about 25 by 30 arc minutes.( a little under 1/2 degree) Centered about RA: 11h58m DE:+53°10'.
Celestial North is to the left and Celestial East at the bottom in this image in the Constillation Ursa Major (Big Dipper).
NGC-3992 is a barred spiral galaxy and only 85million light years away give or take 25 million or so. Pierre Mechain noted the galaxy in 1781 and Charles Messier catalogued it in 1783.
UGC-6923 located to the left of the bright star in the upper right and UGC-6940 (the smudge in the middle of the picture) are sattelite galaxys of NGC-3992.
The smudge in the lower lef corner is PGC-37700. I don't have a catagog for this galaxy and didn't find any info on the net.
This image was taken the night after the full moon and all the moon light made getting a better image difficult at the present time.

Hutech Canon 40D,Skywatcher 120ED F7.5 900mm FL
17 X 10min. exposures stacked using nebulosity drizzle process.
10 dark/bias frames with 16 flat frames used in preprocessing.
Final processing with Canon DPP
Older Mountain Instruments MI-250 tangent arm mount guided by StarShoot autoguider on a Borg 77Ach. hide exif

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Date/Time21-Feb-2011 15:17:47
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other sizes: small medium large original auto
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