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M100 (NGC 4321)

Typ:Spiral galaxy
Constellation:Coma Berenices
Size:7x6'
Distance:55000 kLj
Brightness:10.1 mag
Position:RA:12h 22m 54.9s DEC:+15° 49′ 21″
Max. height:55.82°, Mar. (midnight at +50°N)
Show in Stellarium
Discovered:Pierre Méchain, 1781
Details:Read more on Wikipedia

The next image shows the full frame in a manual edit (580mm, ASI2600MM, LRGB 1h).