Using an Atik383L with a Newtonian

[CFG47]

I have used the above camera successfully with refractors, but have recently bought a Newtonian.  I am getting a sort of diagonal white haze on the captures filling half the image i.e. wavey and diagonally bottom right.  Is this some sort of frosting?  I changed the dessicant only 1 imaging session ago, so wondering whether being more exposed to the elements with a Newtonian, it is causing a problem.

What do you think, and how can I overcome it?  No space really for a dew heater as FW and Coma Corrector are between camera and drawtube.

CFG

[CFG47]

Sorry, I think I put this in the wrong section, please move if possible.

CFG

[Lex]

Hi,

this is difficult to isolate without viewing a sample picture...
The camera is not more exposed on a Newt than on any other Scope?
Post a pic if you want a better analyse pls...

Best