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M102 >

M101 (NGC 5457)

Pinwheel Galaxy

Typ:Spiral galaxy
Constellation:Ursa Major
Size:22'
Distance:19100–22400 kLj
Brightness:7.9 mag
Position:RA:14h 03m 12.6s DEC:+54° 20′ 57″
Max. height:85.64°, Apr. (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).