Quote:
Originally Posted by ChrisV
So
- no spikes when not guiding = nothing wrong with mount
- no spikes when guiding through a PC = nothing wrong with camera, guiding and cables
- spikes when guiding through asiair = something wrong with the ASI air or specific cables used with It?
Great detective work
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No Not quite.
The PC and asiair both suffer same spikes.
At this point it appears to be the asi 120mm camera, which is ironic because I cant guide without it and its guiding that I always use as a test to see the spikes in PHD2, and its probably about the one thing thats been consistently plugged in through all my tests. I have always just assumed it must be the mount (having bene through the power supply and eqmod cable alternatives) that the camea worked but produced usb comms errors was not on my radar.
It was only when the asiair controlled the mount (really just leaving it tracking) and the guidecam was connected to the pc as a phd2 monitoring tool that I got good phd2 results (no spikes)
So my next test will be recreate the spikes (easy) then disconnect the 120mm camera and use the asi 533 for guiding. view the guide graph, do I get spikes, swap back and forth a bit. If it still indicates the asi120mm is the problem, double check with a few different usb cables on the asi 120mm.
Assuming it is the asi 120mm and not a cable or two! (unlikely) I will make a warranty claim, its 2 year warranty and is 18 months old.
Am really hoping its not just random coincidence playing with my conclusions. and it really is the guidecam.