Eta Carinae Nebula: NGC 3372, one of my all-time favourites! This wide-field image demonstrates the phantastic variety of this object. In the center you can very well see the Keyhole Nebula and Eta Carinae the brightest star in it. As a technical remark: I had the telescope on ALT/AZ orientation. To keep the field rotation small the 1 min exposuretime was selected. Published in:
http://www.astronomie.de/fachbereiche/astrofotografie/2006/25/eta-car.htm

For a higher resolved picture of the central part see here, for a bit larger field of view here.