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Limiting magnitude

Image
About this observation
Observer
David Swan
Time of observation
24/11/2017 - 21:38
Object
NGC objects 7317, 7318 (A and B), 7319 and 7320
Observing location
Tynemouth, UK
Equipment
Scope: 200mm SCT at f/6.3
Camera: ASI178MM
Filter: Baader UV + IR cut
Software: FireCapture, DeepSkyStacker and Astrometrica
Exposure
150 x 5s
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The Quintet was at about 50deg altitude in the west (not my best direction: I am on the east coast). I have examined the image and report that I am able to pick up stars around mag 18 at SNR > 10. I checked that the highlighted star is not an artifact - it is on the DSS chart! David

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