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IC 2574 - Coddington's Nebula 
Ursa Major
Penryn, California
March 2005/january 2009 (lum)
FS-128G (ag, ST-4)
ST-10XME RGB 15 minute subs, L 10 minute subs

IC 2574 is a dwarf  irregular galaxy classified as SBm and is a member of the M 81 group. Extensive studies indicate the bright lobes near the perimeter of the galaxy are super bubbles being formed in the ISM (inter stellar medium) by star burst activity within the bubble. 

Redshift distance is 2.8 Mly, surface brightness is 15.4 mag.