Messier 101, Pinwheel Galaxy widefield

2010-04-17 , Luminance


50 %

Image data

Photographer:Jürgen Stöger
Optics:Takahashi FSQ106ED f/5 (main)
Scopos ED66 (guide)
Mount:Fornax 51
Cameras:QHY8Pro (main)
Starlight SXV-M7 (guide)
Exposure:RGB = 120 minutes
Conditions:about 4.5 – 5 mag (Bortle 6-7), hazy
Moon:below horizon during imaging
Date:17/18 April 2010
Remarks:image processing assistance by Manfred Wasshuber

M 101 object information

RA: 14h03.5m
Dec: +54° 21′
Size: 29 x 27′
Distance: 23 million light years

Messier 101, the Pinwheel Galaxy is a large galaxy in Ursa major.

The galaxy was discoverd by French astronomer Pierre Méchain on March 27, 1781. Charles Messier verified the discovery and included the Pinwheel galaxy in his catalogue of Deep Sky objects.

Image: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)