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M33 - NGC 598 - The Triangulum Galaxy

Messier 33 (M33), commonly referred to as the Triangulum Galaxy is a Spiral Galaxy located in the constellation Triangulum. M33 is the third largest member of our Local Group of galaxies. The Triangulum galaxy also contains one of the largest H II regions known, measuring 1,500 light years in diameter. This galaxy is located about 3 million light years from earth and is approximately 60,000 light years in diameter. It was officially discovered by Charles Messier in 1764.

Location Data
Constellation: Triangulum
Right ascension: 01h 33m 50s
Declination: +30° 39′ 36″
Distance:  3,000,000 ly
Size:  60,000 ly

Observation Data
Apparent magnitude: 5.7
Apparent size: 73x45 arcmins

M33 Location - Image From Stellarium

The images With Blue Borders were taken using equipment provided by the MAS Observatory
Click on the Image to View It Full Size

M33M33
F-Scope, Hyperstar at f/1.9
Canon T5 DSLR.
Oct 2015
Processed by: Steve Volp


M33M33
TOA-130F, f/5.3, STF-8300M. LRGB. Total exp: 4.0 hrs (6X10 min for each band.)
Oct. 2015.
Photo: Dennis Roscoe


M33M 33
TOA-130F, f/5.3, STF-8300M. Luminance only. 5 10 minute frames. July 2015.
Photo: Dennis Roscoe