Collected some data with Carina at the zenith. The dim dust shows up much better.
Canon 5DH and the Canion 300mm F2.8L. Exposures 10X(1m,2m,4m,8m) at 200 ISO. Hutech LPR filter and fridge at -1.5C. Done in HDR.
full res 4MB
http://members.optusnet.com.au/~cheekyfish/carhdrD.jpg
Bert
Sorry