Here's my image of the Helix Nebula.
I took the image with my Canon EOS 300D on the 12-inch equatorial 'scope, handguided with the 4.5-inch guidescope.
The composite image is composed of 1 x 3 min. @ ISO1600 and 3 x 6 min. @ ISO400, about 21-minutes total exposure time. The images were manually stacked in photoshop, no dark frames etc.
There's a medium resolution version of the image at
http://www.skylab.com.au/pmsa/Helix%20Nebula.html
Clear Skies
Paul M