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Messier 33, Triangulum Galaxy

The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy and about 44 other smaller galaxies. [Wikipedia]

Click image for higher resolution version.

Optics: Stellarvue 115 f/7, Stellarvue 0.8x Flattener/Reducer
Camera: QSI 683wsg @ -25C
Filters: Astrodon Tru-Balance Gen 2 E Series LRGB
Mount: Losmandy G11-G2 with Ovision Worm
Guiding: OAG with Starlight Xpress Lodestar Auto Guider / PHD2 Guiding
Location: North Attleboro, Massachusetts and Ashford, Connecticut
~38 hours exposure over 10 nights, 29 August - 27 September 2014
L:R:G:B 18h50m:6h:6h50m:7h, 232 10 min subs binned 1:2:2:2
Captured with Sequence Generator Pro
Processed with PixInsight

Wider crop: