|Optics:||Orion ED80 Apo f/6 (main)|
Scopos ED66 (guide)
|Cameras:||Atik 16HR (main)|
Starlight SXV-M7 (guide)
|Exposure:||Luminance = 120 min.|
|Conditions:||bad transparency, hazy sky|
|Moon:||below horizon during imaging|
|Date:||5 April 2008|
NGC 2903 object information
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.