Messier 51 - Whirlpo...

Messier 51 - Whirlpool Galaxy by Paul Hutchinson

(Reprocessed)

 

Wikipedia: The Whirlpool Galaxy, also known as Messier 51a, M51a, or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus in the constellation Canes Venatici. It was the first galaxy to be classified as a spiral galaxy. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way, but different methods yield distances between 15 and 35 million light-years.

 

 

Technical card

Imaging telescope: Skywatcher Explorer 200p

Imaging camera: Canon 1100D

Mount: HEQ5

Guiding telescope: SkyWatcher 50mm/162mm Finderscope

Guiding camera: QHYCCD qhy-5 II

Software: APT - Astro Photography Tool, DeepSkyStacker, Adobe PhotoshopCS5

Filters: Astronomik CLS Canon EOS Clip

 

Frames:

2013-12-01 6x 90s ISO 6400

2013-12-20 6x 300s ISO 800

2014-02-27 9x 300s ISO 800

2014-08-02 10x 300s ISO 1600

 

Bortle Dark-Sky Scale: 5.00

Centre (RA, hms):13h 29m 55.974s

Centre (Dec, dms):+47° 12' 38.792"

Size:35 x 24.1 arcmin

Radius:0.354 deg

Pixel scale:0.819 arcsec/pixel

Shared from G+ goo.gl/aTd94p

Done