Hope you don't frown on necroposts too badly, but I found this thread through google and I'm sure someone else is experiencing the same issue.
I also have a Skyris 132M for a guide camera and had the same issue. Camera would work during the day at a distant object, but at night would end up with a nearly white screen. I could make out a few stars but they were washed out in the noise. I could not get it to work at all for guiding but I remembered that it was The Imaging Source that made them for Celestron, so in a last ditch attempt I used the Device Driver for USB Astronomy Cameras. What do you know, it worked just fine and I was guiding with PHD2 after the 15 minutes to build a bad pixel map and create a dark frame.
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