Spiral Galaxy
NGC 5457
Ursa Major
14H 3.2m +54° 21'

Magnitude: 7.9
Size: 28.8' × 26.9'
Distance: 17.5 million light-years


Requires intermediate skills

Skill Level
Though M101 is one of the brightest galaxies in the sky, its light is spread out over a large area. M101 requires a good deal of exposure and decent processing skills to bring out its faint details.

JuneBest Month
M101 is high in the sky during early summer. Look for it near the Big Dipper.


Recommended Equipment
The best telescope for M81 is probably a fast Newtonian. If you have a camera with a wide enough field of view, you should be able to get the full extent of the galaxy while preserving detail.

A small refractor is also appropriate.


Image Stats
Meade 8" SN LXD75
Meade DSI Pro III
Meade RGB + IR filters

LRGB at 526:42:46:68 minutes respectively. 2-minute subs; 2×2 binned RGB.

Average to good transparency
16, 25, 26 May and 19, 21, 22 June 2009
San Mateo, CA

See Also
M101 (April 2005)