hi tom,
it will be pretty faint if your 600d isn't astro modified as mike has mentioned above (actually it is pretty faint even in long narrowband exposures).
here is a pic Justin did quite some time ago with his non modified canon
http://www.iceinspace.com.au/forum/s...ad.php?t=90097
the second pic is processed very hard to try and bring some more of the neb out.
all the best
Rusty