Messier 51 - Whirlpool Galaxy

MouseOver for object identification, Click on image for a zoomable full resolution image

Location / Date

Zellerndorf, March/April 2014

Telescope / Mount / Guiding

ASA 10" Astrograph, ASA 2" Barlow Corrector 1.8x (focal length: 1620mm, f6.8)
ASA DDM60, no Guiding

Camera / Exposure

Luminance: Canon EOS 500D Mono, 54 x 15min ISO 800
Color: Canon EOS 500Da, 23 x 15min ISO 800
Hα: Canon EOS 500D Mono, 12 x 15min ISO 1600

total 22h 15min


Theli, Fitswork, PixInsight, Photoshop


Messier 51 is a large galaxy with a well defined spiral structure in the constellation Canes Venatici. This is why it is also called Whirlpool Galaxy. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way Galaxy. It is also cataloged as NGC 5194.

Messier 51 is gravitationally interacting with a smaller dwarf galaxy, NGC 5195. Its spiral arms and dust lanes sweeps in front of its smaller companion galaxy.

Published in the ASA Calendar 2016

Home Galaxies Nebulae Star Clusters Miscellaneous