The thing about the swaddling- I guessed as much but now it's dark I am reticent to take covers off with threatening clouds. Plus it's near Christmas and traditionally swaddling clothes are in the nativity play (next to the Canon DSLR from Nazareth)
I wanted to shoot a series of 500 sec darks so when I finally get some clear sky I could directly contrast my last set of lights on the Rosette with the modded cam; same exp, same iso etc. Obviously now have realised need to shoot the darks at the scene of the crime as it were.
This is a bugger as apart from processing, shooting darks is the only excuse I have for playing with my telescope on a cloudy night. I won't tell my wife though, have to keep shooting darks till I get it right. Also, late at night, under even a cloudy sky, with just the shutter going-that's just about the best peace a man(or woman) can get. So even if I have to re-shoot my darks at the next time I do lights, tonight I continue to do darks!
Thanks to all for advice thus far
Peace & harmony all
Graz