Here's a comparison for you Rob. RB did the processing on this one (and did a fine job too

) that I took at Astrofest last year. using the 300D and Canon 135mm f/2 lens, 19 x 300sec @ ISO400 @f/2.8.
(Edit Whoops)
http://www.iceinspace.com.au/forum/a...se.php?a=32325
More data need mate.