M91 (NGC 4548)

Typ:Barred Spiral galaxy
Constellation:Coma Berenices
Size:5.4x4.4'
Distance:47000–79000 kLj
Brightness:11 mag
Position:RA:12h 35m 26.4s DEC:+14° 29′ 47″
Max. height:54.50°, Mar. (midnight at +50°N)
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Discovered:Charles Messier, 1781
Details:Read more on Wikipedia

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