M31 (NGC 224)

Andromeda Galaxy

Typ:Spiral galaxy
Constellation:Andromeda
Size:178x63'
Distance:2,430–2,650 kLj
Brightness:3.4 mag
Position:RA:00h 42m 44.3s DEC:+41° 16′ 9″
Max. height:81.27°, Oct. (midnight at +50°N)
Show in Stellarium
Discovered:Abd al-Rahman al-Sufi, 964
Details:Read more on Wikipedia

The complete image was taken with a fast 360mm f/2.8 reflector and exposed for 80 minutes (LRGB):