Last w-e in Paris, there were lots of talks about webcams in astronomy, of course.
I have a ToUcam Pro which, according to what I heard can also be tricked into log time exposure (we thought only the Vesta Pro could do this). I much prefer the ToUcam as it is extremely lightweight (a must for ETX90 owners) and gives great images.
However, I had noticed, whenever I wanted to use the Barlow 2x, there would appear a number of dark spots. I thought it was the Barlow 2x, bought a second one and found the same spots again. It's the CCD on the webcam. But whenever I clean it, I spread new spots. Actually, the spots are so small, I can't see them!
Rather annoying
Raoul