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Stephan's Quintet

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About this observation
Observer
Kevin Gurney
Time of observation
22/09/2017 - 02:45
Object
Stephan's Quintet
Observing location
Kelling Heath campsite
Equipment
Celestron 8SE, OAG, 0.77 flat/reducer
Atik 460EX mono, SX guide cam
Skywatcher AZ-EQ6-GT
Pixinsight
Baader luminance filter
Exposure
Lum bin 1x1, 10 subs of 7min each
Tags

Taken at Kelling Heath Sky Camp, so good dark sky.

Sky cleared about 1:30 and I had hoped for a full LRGB set. However, I misjudged the altitude of the trees and, after obtaining a series of Red subs, the Green were spoiled! Nevertheless, the Luminance files alone (used here) give the essential details of one of the showcase examples from the Hickson catalogue (#92). 

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