Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
M51 Whirpool Galaxy, 


M51 Whirpool Galaxy
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M51 Whirpool Galaxy

Technical card

Imaging cameras: Atik 428EX Mono

Mounts: Orion Sirius EQ-G

Guiding telescopes or lenses: Orion USA 50mm Finder / Guider

Guiding cameras: Orion StarShoot AutoGuider

Software: PHD guiding  ·  PixInsight  ·  EQMOD  ·  Cartes du Ciel  ·  Nebulosity

Filters: Baader B  ·  Baader L  ·  Baader G  ·  Baader R

Accessory: Xagyl Comm 1.25" Ultra-Thin Filter Wheel

Dates:May 6, 2014May 9, 2014May 11, 2014

Baader B: 11x300" -10C bin 2x2
Baader G: 9x300" -10C bin 2x2
Baader L: 21x600" -10C bin 1x1
Baader R: 5x300" -10C bin 2x2

Integration: 5.6 hours

Avg. Moon age: 9.24 days

Avg. Moon phase: 67.86%

Basic astrometry details

Astrometry.net job: 300637

RA center: 13h 29' 53"

DEC center: +47° 11' 45"

Pixel scale: 1.563 arcsec/pixel

Orientation: -123.750 degrees

Field radius: 0.467 degrees

Resolution: 620x440


The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting[6] grand-design[7] spiral galaxy with a Seyfert 2 active galactic nucleus[8] in the constellation Canes Venatici. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way,[3] but different methods yield distances between 15 and 35 million ly. Messier 51 is one of the best known galaxies in the sky.[


Sky plot

Sky plot


M51 Whirpool Galaxy,