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M52 is located in Cassiopeia at nearly 5,000 light years from us. M52 is a very rich open cluster, mainly populated by yellow F stars, it also contains some blue stars. The Cave Nebula (Sh2-155, Caldwell 9) and the Bubble Nebula (NGC 7635) are located very close to M52, but outside this frame.
Additional Information
Object
Name(s): M52, NGC 7654
Type: Open Cluster
RA: 23h 24m 48s
Dec: +61º 34’ 55.4”
Constellation: Cassiopeia
Size (arcmin): 15
Magnitude: +7
Distance: 4,600 ly
Image
Date: 2012-10-09
Location: Corbera de Llobregat, Barcelona, Catalonia
Size (arcmin): 37×27
Telescope: Celestron 11” HD f/10
Camera: FLI ML6303 (3072x2048pix)
Guiding: Orion SSAG/Nikkor 500mm f/8
Total exposure: 40 min (L: 10min; RGB: 30min)
Processing: PixInsight