Hi Bert
Nice, large images there. Ive been clouded out last few nights
Also try doing some manual dark frames with noise reduction off in the camera, that way it saves time. With Iris software, its adaptive dark thing mens you can get away with using darks taken at different temperatures on different nights, or even different lengths. Ive seen the Digital Development tool in IP and its a very powerful one for bringing out the faint detail.
Scott