Ngc 7789 in Cassiopeia
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2011-09-17
Gahberg observatory, Upper Austria
6” Lichtenknecker Flatfieldcamera Canon EOS 500d
Alt AD6
32x5 min ISO 200
02h 40min
Open cluster
16’
+6.7 mag
Cassiopeia
7600 light years
discovered by Caroline Herschel 1783
bright moonlight
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