The Eta Carinae Nebula lies 7500 light years away in the constellation Carina. At it's heart is the star Eta Carinae, a supermassive star of over 100 solar masses. The nebula itself is over 7 times larger than the Great Orion Nebula (M42) and is approximately 250 light years across.
Full Resolution: www.pbase.com/gailmarc/image/142259284/original
This is 7.3 hour LHaRGB image (30, 210, 60, 80, 60 minutes). All subs were unbinned. Ha, (L, R, G) and B subs were 30, 5 and 10 mins respectively.
FOV is 2.35 x 1.56 deg @ 2.21 arcsec/pixel.
Takahashi TOA-150 refractor @ F5.5 (FL=825mm) on a Paramount ME, SBIG STL 11000M camera and Takahashi 645 Super Reducer.