Thanks Rob and John.
This link is to 86 wikisky images of NGC and IC nebulae. They have a variety of field sizes.
https://picasaweb.google.com/1100488...46/NGCNebulae#
You can also search for nebulae by zooming into Nick Risinger's magnificent image of the Milky Way.
http://media.skysurvey.org/openzoom.html
The Photopic Sky Survey is a 5,000 megapixel photograph of the entire night sky stitched together from 37,440 exposures.
http://skysurvey.org/survey/