M51


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By
Catalog
Obj Type
Location
Date Taken:
Mazlin
Messier 51
Galaxy
Mayhill, NM
04-16-2008
Description

M51, the 'Whirlpool Galaxy' in Canes Venatici is famous for its beautiful spiral structure, first noted by Lord Rosse in 1845. It was discovered by Messier in October 1773 and catalogued by him in January 1774. Its companion galaxy, NGC 5195, (seen below M51 in this image) was discovered in 1781 by Messier's colleague, P. Mechain. The M51 system is a spectacular example of interacting galaxies - in this case NGC 5195 is being "ripped apart" by the huge gravitational disturbance of M51, while M51 has in turn undergone huge structural alteration from the gravitational effects of NGC 5195. The distance of M51 is estimated to be about 37 million light years. The diameter is approximately 100,000 light years and the total mass is estmated to be the equivalent of 160 billion suns.

To see our 2006 version of the object image, click here.
 

Technical Details
Exposure Time:
HaLRGB 15 hours Lum, 9 hours RGB, and 7.5 hours Ha
Camera:
SBIG STL-11000M
Telescope:
RCOS 16 inch f/8.7 Ritchey-Chretien
Mount:
Software Bisque Paramount ME
© 2018 Mazlin
Used with permission, No reproduction of these images are permitted without written approval from Mazlin.