Hi,
The weather is still crap, and the moon's out anyway, so I decided to dig up some old data on M27.
Below is the specs of the image from 22/5/12.
Telescope 8” f/4 astrograph on a HEQ Pro 5 mount, orion mini guider.
Unmodded Canon 1100D at ISO 800.
16 x 120 sec subs ISO 800,
11 dark frames, 11 flat frames and 11 bias.
Stacked in DSS and post process in Phototshop.
The link to the original image.
http://www.iceinspace.com.au/forum/a...e.php?a=115636
I'm quite pleased of how much more I managed to squeeze out.
Perhaps not a silk purse, but definitely a vinyl wallet.
Cheers,
Justin.