I'm not new to astronomy or telescopes.
I AM however *new* to GoTo computerized mounts.
Am wondering if I'm missing something in the alignment procedure
or is this lack of pointing accuracy inherent with this mount and drive? (i.e) Worm gear errors over time & slew distance?)
The GoTo is missing targets by approx 3-4 degrees declination primarily; though I have noticed some RA misses too
depending where I am slewing to.
My first hint that the mount was missing targets is when it failed to center Jupiter & Saturn this evening.
My first guess was perhaps the planet database was corrupt; but then tried bright stars etc with same issue.
Currently using the mount in alt/az.
My alignment procedure with this 8" LX90 is as follows:
1) Level tripod head.
2) Use Polaris as "True North" Lock RA
3) Level OTA. Lock Dec. (Using bubble level in eyepiece holder) **The declination circle indicates +3 degrees when bubble is centered** Hmmm? Dec Circle off or bubble level problem?
4) Turn on AudioStar; select True North alignment. GPS signal is ok.
5) Scope slews to first alignment star. It is off by 3-5 degrees. I center the star and press" Enter"
6) Scope slews to second alignment star. It is off by 3-5 degrees. I center the star and press" Enter"
7) Audio-Star shows "Alignment Successful"
Interestingly, when I slewed to the Ring Neb which is close to zenith at my location, it was well centered.
This ^^^ would make me believe it is a RA calibration error, but objects lower in DEC would be off in DEC as well.
I DID train the scope today w/o issue.
Any advice would be greatly appreciated.
I'd hate to have to go back to setting circles as in my younger days with telescopes.