My completed mosaic of the Eta Carina Nebula (NGC 3372). It appears so large in the sky that it needs more than the 9 panels I could give it. This glorious star forming region lies a whopping 9,000 light years away and is actually much larger and brighter than the more famous Great Orion Nebula.
Final image is slightly cut down from the 9 original panels. Each panel contains 20x 30-second exposures at ISO 200 with a Nikon D5100 on a 6" F/5 Newtonian reflector. A Hutech IDAS light pollution filter and a GSO coma corrector were used. Unguided on HEQ5 pro mount. No calibration images were used, though subs were effectively dithered. All images captured from Wallaroo, near Canberra Australia.
A larger version can be found here:
https://www.dropbox.com/s/3upf3d38rn...mosaic_med.jpg