Messier 51 - Whirlpool Galaxy in CVn (Massimo Marchini)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4277 · IC 4278 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

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Messier 51 - Whirlpool Galaxy in CVn

Link: https://www.flickr.com/photos/madmax1616/

Link to TIFF/FITS: https://flic.kr/p/2oxHA7F

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Messier 51 - Whirlpool Galaxy in CVn

Link: https://www.flickr.com/photos/madmax1616/

Link to TIFF/FITS: https://flic.kr/p/2oxHA7F

Messier 51, discovered on October 13, 1773, by Charles Messier, is a double galaxy system located in the constellation Canes Venatici at about 31 million light-years from Earth.
It’s one of the most known interacting galaxy pairs in astronomy and it was also the subject of very early theoretical investigations into galaxy interactions.
The system contains two galaxies.
The larger one M51a (also known as Whirlpool Galaxy or NGC 5194) is a grand-design spiral galaxy; it has very well-defined arms, containing HII regions.
The smaller M51b (or NGC 5195) is a dwarf galaxy, connected to its companion by a dust-rich tidal bridge.
Because of irregular weather, I preferred to use my OSC ASI533MC; I took 201 shots over the course of 3 nights and was able to save only 81 (6h 45m final integration on 16h 45m total exposure).

Suburban Astrophotography
Imagers of Italy
AAA : Astronomes et Astrographes Amateurs
ASI533MC Pro
Optolong L-Pro filter
Cloudy Nights

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Status	Advanced success
Started	...
Astrometry.net job	7646050
PixInsight job	L0WP8JJABYGW7CHAP3ETFM9O7ZDFODJ1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h29m56s.238
RA (top/left)	13h31m10s.380
RA (top/right)	13h28m41s.902
RA (bottom/right)	13h28m43s.463
RA (bottom/left)	13h31m09s.948

Dec (center)	+47°14′21″.23
Dec (top/left)	+47°27′32″.60
Dec (top/right)	+47°27′26″.59
Dec (bottom/right)	+47°01′10″.18
Dec (bottom/left)	+47°01′13″.85

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Messier 51 - Whirlpool Galaxy in CVn

Messier 51 - Whirlpool Galaxy in CVn

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Messier 51 - Whirlpool Galaxy in CVn

Messier 51 - Whirlpool Galaxy in CVn

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