Quote:
Originally Posted by JohnH
Thanks Rainer, good tip, my RA is now running in...and yes you are correct the PE curve avis is arc secs and the guided curve is pixes (1 pixel = 2.75") sorry to confuse.
I am not sure the spikes are seeing related - the reason I sat that is I would expect seeing related excursions to impact both axes equally over time - but there is more "noise" on the RA trace - and it seems to be periodic....
I will see if the run in has any impact on the noise - hope it does, if not I may be in for an Ovision worm I guess...but it a little early for me to make that call.
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Good. Before you make a bigger investment in the OVISION wrom I would suggest to check the backlash in the RA axis and the alignment of the ball bearings located inside the 2 blocks.
You can easily check this by using a ruler and look if one of the blocks is twisted. You can see this by a possible gap between the block side and the ruler.
If you are technically handy then try to reduce as far as possible the RA backlash and let the worm run in. Use a good grease maybe with teflon ingredient.
I also have a more nervous RA axis compared to the dec axis but this os certainly due to the friction of the worm against the big gear.