I was using guidedog and a modded webcam and the program is good on low brightness stars. It guided well with +/- 2 or 3 arc sec accuracy, but it was a drain aligning n/s and e/w with the camera axis. So I switched to guidemaster and the newer version when it came out. I find its better and with the information well presented as to how the guiding session is going. Can save data to file for analysis.
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