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Is it 0.01as/second (0.6as/minute, 36as/hour, 864as/day) all over the entire sky? Can you turn ProTrack OFF, point to a few strategic positions and measure it? Such as North, South, East, West, Zenith, etc?
The drift amount you have measured is very interesting. There are 86,400 seconds in a solar day. This makes it look like maybe an Axis->Track Rate parameter setting problem. I can see why you might think it's a firmware problem too. Perhaps you might set all parameters to their default values and do a save to mount. Then don't forget to reset the ones you need to change, such as Southern Hemisphere, limits, etc.
How about using a cross-hair eyepiece during the day and pointing the scope at something in the distance with the mount turned off. See any small consistent movement over time? (Ground settling, flexure, etc.)
Last edited by frolinmod; 23-03-2014 at 01:28 PM.
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