M51: Whirlpool galaxy

The Whirlpool Galaxy (also known as Messier 51aM51a, or NGC 5194) is an interacting grand-design spiral galaxy in the constellation Canes Venatici. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way Galaxy, but different methods yield distances between 15 and 35 million ly. Messier 51 is one of the best known galaxies in the sky. The galaxy and its companion (NGC 5195) are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars. The Whirlpool Galaxy is also a popular target for professional astronomers, who study it to further understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.

Imaging telescopes or lenses: Astro-Tech AT8IN f/4 8″ Imaging Newtonian
Imaging cameras: Orion Starshoot Mono III
Mounts: Celestron CGEM
Guiding telescopes or lenses: Orion ST 80
Guiding cameras: Starlight Xpress Lodestar
Software: PixInsight, photoshop, Maxim DL
Filters: Xagyl Comm 1.25″ Luminance
Accessories: Shoestring Astronomy FCUSB, Xagyl Comm 1.25″ Ultra-Thin Filter Wheel, Astro-Tech Coma Corrector
Dates: April 22, 2012
Xagyl Comm 1.25″ G: 30×180″ bin 1×1
Xagyl Comm 1.25″ Red: 30×180″ bin 1×1
Xagyl Comm 1.25″ B: 30×180″ bin 1×1
Xagyl Comm 1.25″ Luminance: 22×300″ bin 1×1

Autor: Chris Madson

AstroPhotography of the day by SPONLI

11 February 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.