Re: "Repaired" LX-200 Pointing Accuracy
| Subject: | Re: "Repaired" LX-200 Pointing Accuracy |
| From: | Ken Shouse |
| Date: | Wed Feb 07 12:36:12 1996 |
>>
> The sky finally cleared long enough for me to test my 10" LX-200 (v 3.34)
> after it came back from Meade following repair. Although everything
> functions, the pointing accuracy is way off now...
[snip]
> I also tried centering Rigel, syncing, slewing
> far away from it and then doing a goto back to Rigel. It always came back
> exactly in the center...
>
Allen,
Your experience with the scope being able to re-center Rigel would
indicate that your RA encoder is not dropping counts randomly. Its
almost as if the resolution of your encoder is not what the ROMS think
it is. (That is, the ROMS think you have a different number of counts
per rev. than your encoder is actually putting out.) Has the RA encoder
ever been upgraded during the evolution of the LX200?
Just a thought...
ken
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Kenneth R. Shouse, Ph.D.
Senior Research Engineer ____/ __ / /
Engine & Vehicle Research Division ___ / / / / __ / /
Southwest Research Institute _____/ _____/ _/ _| _/
6220 Culebra Rd., Bld. 151
San Antonio, TX
(210) 522-5016 (210) 522-2019 (fax) kshouse@swri.edu
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