Managed to get some data before cloud rolled in again in Melbourne.
Canon 5DH, Canon 300mm F2.8L at f/3.5 with 86mm diameter aperture in front of lens, Hutech LPR filter.
Exposures 20x30s, 20x60s and 10x120s at 1600 ISO. New fridge at -5C.
Large Image 11MB
http://d1355990.i49.quadrahosting.co.../lamdacent.jpg
There is slight CA on brighter stars near the corners but it is a small price to pay for very fast almost perfect optics over the majority of the wide field.
Here is a map with image superimposed. 2MB
http://d1355990.i49.quadrahosting.co...10_01/map1.jpg
Bert