Hey Paul, thanks for the advice. I found focus pretty hard to get spot on {as if i would recognise it anyway} and even when i thought i had it i still get all blurry when i do the longer exp.oopps got my numbers round the wrong way for m13.
I did bring the white point way over when i took the shots. Should i just do that a bit so i can see it faintly then leave the rest of the fixing for photoshop?
What i wouldnt give for a night with Ezy

He does the best dsi stuff ive seen.
Maybe i need a wedge as well. He seems to do much longer exp than 30 secs
Ill take any advice folks have {then ill give the same objects a go with my new smarts}
Cheers peoples