Here is a single exposure for 16 minutes at an ISO of 500 with ICNR on and an Astronomik H Alpha filter.
Fridge temperature 1.0 deg C.
The usual Canon 5DH Canon 300mm F2.8L at f/2.8.
No processing apart from RAW to TIFF and correct for flats and digital development with ImagesPlus. Then levels and curves in PS.
Large image 1.3MB
http://members.optusnet.com.au/~avandonk2/tstb.jpg
There is a slight amount of noise (black dots) but that will disappear with median stacking.
Here is a thread showing the same objects
http://www.iceinspace.com.au/forum/s...ad.php?t=19879
Bert