Open Cluster in Cygnus
NGC 6913
Mag 7.1
Cooling Tower Cluster

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03/07/13
Obvious why it got it's name!
In a very rich starfield, seven stars all appear as same magnitude

30/08/16
The Cooling Tower
Visible tonight in finderscope, it is so clear
Rather ragged in 12mm, the brightest eight stars, of Mags 8 and 9 do indeed form an asterism which looks like a cooling tower