Yes that does seem strange to be 10mm out.
As for Maxim DL:
I'll have another go at it on the bench.
I may have to reload all the software.
There is something fundamentally wrong which I don't understand.
If you click on the guide camera you should not be operating
the main QHY9's imaging camera's filter wheel without asking it to do so.
There must be something completely messed up with the windows or QHY9 drivers.
Anyway I still managed to take an image of the Lagoon nebula M8 using other software.
see here:
http://www.flickr.com/photos/2471943...in/photostream