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M97 (NGC 3587)

Owl Nebula

Typ:Planetary nebula
Constellation:Ursa Major
Size:3.4x3.3'
Distance:2.03 kLj
Brightness:9.9 mag
Position:RA:11h 14m 47.734s DEC:+55° 01′ 08.50″
Max. height:84.98°, 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).