Messier 40 (M40) is a magnitude 9/10 double star in Ursa Major. This is considered by
some to be a 'mistake' in terms of its inclusion in the Messier catalog which is made up of
more complex objects such as clusters and nebulous objects. The pair shows up nicely in
this photograph, separated by around 52 arc seconds, and with a noticeable blue/yellow
contrast. The bright yellow mag 5.5 K5 star to the left (70 Ursae Majoris) adds interest to
this image, as do several small and distant galaxies sprinkled around the field of view. That
little face-on barred spiral at the lower left is NGC 4290 at mag 13, and the smaller edge-on
below that is NGC 4284 at mag 14.7.
Date: Apr 5-6 2014
Location: New Ringgold PA
Optics: Hyperion 12.5 inch f/9 2532mm focal length
Mount: Paramount ME
Camera: SBIG STL 11000
Guiding: self guided
Exposure: RGB - R:108 min, G:8x8 min, B:10x10 min for a total of 4 hrs
Processing: Image acquisition using CCD Autopilot. Initial processing was done using
Maxim DL with subsequent processing with Photoshop.