Atik 420 picture size?

[stephen99]

Ok getting the hang of the 420. Using it with the Hyperstar and my Celestron Edge HD8 scope. So far so good. Although I am very surprised that the fits files I am getting are so small in size. Generally 1-2 mb Which is giving me some problems when I go to post processing. Even stacked. I am trying to use the Atik software as much as I can. Is there some setting where can change this? I dont understand why they would be so small in size. Suggestions? Ideas?

thanks

Steve