Quote:
Originally Posted by billdan
I'm a little confused, where did the 122 secs come from? It seems you have one peak at the 681sec spot and the next peak at the 1641 sec spot, that's a difference of 960 secs.
Plus I think you should include the DEC graph as well, because sometimes movement in DEC can exaggerate the movement in RA. Those big swings could be caused by something moving in DEC (flexure??).
Cheers
Bill
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I had a similar thought when looking at the graph. This is quite strange. The manufacturer claimed 122s period doesn't correspond to a whole number of teeth on the worm wheel. The 960s period suggests a 90 tooth worm wheel. A high end mount wouldn't have a 90 tooth worm. If it did, I'd suggest it couldn't be made accurately enough to produce a ±5" PE. What are the mount specs for the number of teeth on the wheel?
Cheers
Joe