The cable problem, solved move the laptop closer to the camera.
Some experimentation and coloured pictures are emerging.
I capture with Nebulosity and the images are stored raw.
I have debayered them one by one in Nebulosity and then stacked them, but there must be some way of passing the debayer requirements to Neb so that they are debayered on the fly.
This is the next thing to learn then I will worry about temperature control.
Good so far
Chris