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A loose globular in Bootes


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About this observation
Nick Hewitt
Time of observation
04/05/2018 - 00:00
NGC 5466 Bootes
Observing location
Billing, Northampton
TMB 115mm f7 apo
SX Trius 814
Astronomik filters
30 mins Lum, 5 mins each RGB (more subs would heve been better)

An under-observed globular cluster that is well placed in May, some 10 degrees from Arcturus on the Coma Berenices border. Although 10th magnitude, it has quite low surface brightness and small telescopes generally just show a diffuse glow but it becomes very resolvable to the core with larger instruments as it is a Shapley class X11. It is fairly distant at some 50,000 light-years. Like most of the galactic globulars, it is very old (13.5 Gyr).

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