NGC2359 also known as Thors Helmet. It's an emission nebula situated in the constellation Canis Major.
NGC 2359 is approximately 15,000 light-years away and 30 light years in size.
Taken on a CENTRAL DSLR Canon40d cooled thru a 152mm f8 four element " INTANE OPTICS" Super APO refractor.
Takahashi NJP Temma II mount and The Sky Six Pro. Autoguider is DSI Pro and Mitsuboshi Off Axis Guider thanks to PHD and Shoe String Astro.
No filters apart from LP front filter. 8 x 15 minute exposures at 800ASA.
Processing with Images Plus and Paint Shop Pro. Image is heavily cropped.
Taken from Onerahi, Whangarei New Zealand in December 2009.