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Messier 81

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About this observation
Observer
Martina McGovern
Time of observation
22/11/2020 - 23:00
Object
Messier 81
Observing location
Cambridge, UK
Equipment
Celestron Edge HD 8” SCT, SkyWatcher HEQ5 PRO
ZWO ASI294MC Pro, main camera
ZWO ASIAir Pro, ZWO EAF (Electronic Automatic Focuser) & Dual-Speed 2-inch Crayford Focuser for SCT’s
ZWO 60mm Guide scope, ZWO ASI120MM mini, Guide camera
Optolong L-Pro Broadband filter, Optolong L-eXtreme dual band filter (Ha & OIII)
Exposure
Approx 5hrs of L-pro data & 40mins L-eXtreme data; 180s
Tags

Martina comments that "I haven’t had a clear night in so so long – until last Sunday - So, I stayed up right through until 6am the next day!!! I have been wanting to try to capture this one for a while now."

M81 (Bodes Galaxy) is a grand design spiral galaxy about 12 Million light years away, with a diameter of 90,000 light years, in the constellation of Ursa Major. Due to its proximity to Earth, large size, and active Galactic nucleus (which harbours a supermassive black hole), Messier 81 has been studied extensively by professional astronomers. Extract from Wikipedia.

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