M 101

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 1384 x 968 pixel image (1 meg)
Description: M 101 is an asymmetric spiral galaxy because its core is displaced from the center of its disk. Halton Arp called it a "Spiral with One Heavy Arm". The Chandra orbiting, X-Ray Observatory has recently found a possible new class of x-ray sources in M 101. These could be intermediate-sized black holes.

There are two other members of the M 101 Group visible in this image. Click here to see them identified.

Constellation: Ursa Major
Distance: ~27 million light years
Apparent Size: 22'
Date: 26-28 january 2006
Equipment: FSQ @ f/5, ST2000XM, MI-250
Exposure: LRGB: 150-90-60-45 minutes