AstroPhotography by Dan Richey

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The Whirlpool Galaxy, also known as Messier 51a, M51a, and NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. Its distance is estimated to be 23 million light-years away from Earth. The galaxy and its companion, NGC 5195, are easily observed by amateur astronomers, and the two galaxies may be seen with binoculars.[11] The Whirlpool Galaxy has been extensively observed by professional astronomers, who study it to understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.

Object Information

Name M51
Type Spiral Galaxy
Constellation Canes Venatici
Catalogue NGC 5194 / 95

Acquisition / Processing

Exposure L - 15 X 600 sec Bin 1
R, G & B - each 10 x 300sec Bin 1
Total 5.0 Hr
Telescope AP 160(2X) @ f 15
Camera SBIG STT-8300
Camera Temp -40ÂșC
Guiding SBIG SG4 / AP 105
Mount AP 1100 GTO
Filters Astrodon - Gen 2 LRGB
Processing PixInsight
Location San Pedro Creek, NM
Date 7/3 - 7/30, 2019

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