NGC 2359 Thor’s Helmet Nebula

The Thor’s Helmet or Duck Nebula, NGC 2359 in Canis Major. Faint cluster at left of nebula is Haffner 6, one at upper left is Haffner 8; one at left edge of frame, centre, is NGC 2374. This is a stack of 4 x 10 minute exposures at ISO 800 with the Canon 5D MkII and Astro-Physics Traveler 105mm apo refractor at f/5.8 with the 6×7 field flattener. Taken from Timor Cottage, Coonabarabran, Australia, December 18/19, 2012.

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