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NGC 6946
Nearby, Face-on Spiral Galaxy
aka Arp 29, PGC 65001, MCG 10-29-6, Uppsala 11597
Integrated Visual Magnitude: 9.7
Apparent Diameter: 11.5' x 10'
Mean Surface Brightness: 23.5 mag/arc-sec2
Distance: 10 Mly

Minimum requirements to view: 4-inch telescope under dark skies

This is a face-on spiral galaxy in Cygnus that is one of the closest galaxies outside of the Local Group.  Walter Scott Houston called it a "fine galaxy... easily seen in even small telescopes."  He also observed that "Despite the glittering foreground star field, NGC 6946 stands out well."  In a region where galaxies are sparse due to the obscuring dust of the Milky Way, this galaxy would appear much brighter if it were elsewhere.  So far, an unprecidented six supernovae have been observed in NGC 6946!

As a bonus, the tiny open cluster NGC 6939 lies within the same low-power eyepiece field.  This 7' grouping of about 80 stars has an integrated magnitude of ~10.  They were born together fairly recently (about 1.6 billion years ago).

In my six inch the galaxy appeared as an oval diffuse haze with no central condensation.  The tiny cluster was an unexpected treat.  The brighter stars in the cluster were plainly resolved, but a haze of unresolved fainter stars was also visible.


A six-inch view at 50x.  North is down and east is right.

Millennium Star Atlas Vol III Chart 1074
Sky Atlas 2000 Chart 3
Uranometria 2000 Vol I Chart 56