answering your question: when I take pictures with CCD i use dither between frames. Having that solution makes it impossible to takie pictures simultaneously with DSLR mounted on counterweight rod - DSLR will register dither.
So I dream about solution that SGP could program sequence in that way: after completing CCD subframe mount makes dither, and DSLR waits until dither is finished, then starts exposure.
I know that SGPro does not give option to work synchronized with two cameras, that is why I put this post in “Feature Requests” section
It would be great to have support for two or more cameras in SGP, but I know that this is quite complex request and hard to implement in SGP. I am thinking (dreaming) about a separeate program, which can take a photo and can be run by “Run script” feature in the “Event settings” (Pre-Event Options) or something similar.