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Troy,
I use PHD a bit but am no expert and others will probably do things differently to me but here goes...
1. WDM is correct and a Dennis recommends I also use 640x480. I've tried the different options (RGB24, IYUV and I420) but have not found any difference in the image - someone else might be able to explain the difference and if one is better than the others but I've found them all to work much the same.
2. I run with the gamma all the way to the right. I have a neximage which is similar to the toucam - both short exposure and not particularly sensitive in LUX terms so can also only find relatively bright guide stars with it. To find a guide star in some regions you might need a set of guide rings so you can re-position the guide scope independent of the imaging scope.
3. Not sure why your guide star drifted out of the box - normally it starts carrying on (beeping) when it looses the guide star (cloud etc). Was the GPUSB light changing colour indicating it was receiving guide commands from PHD? Also can you hear the motors in the mount making guide corrections?
I'm also in Brisbane so happy to get together one night and have a look if you want.
Good luck.
Peter
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