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Subject: [M]: Re: 10" LX-50 RA Drive
From: Joshua Kent
Reply To: mapug@shore.net
Date: Sat Mar 21 00:11:48 1998

Todd wrote:
>I have owned a LX-50 since they first appeared and have been very happy
with
>it. I just recently have gotten into CCD imaging. Now that I have
>accurately polar aligned the scope I have notice a large error in the RA
>drive. During most of the turn of the worm the drive tracks very good.
The
>problem is during about two minutes of the worm period the scope appears to
>speed up and then slow down. This error during this period is a little
more
>than four minutes of arc. I suspect the worm since it repeats regularly.


I can only guess two possibility. First, are you using an CCD autoguider?
That could be a source of irregular tracking. Second, has the motor and
chip been updated since you received the scope? If not, call Meade and see
if the earilier models (older motor and firmware) had his problem. Who
knows, maybe they have a fix chip for this.

How long is the worm period? I've always wanted to know.

Thanks, and good luck...


Joshua Kent
< http://www.geocities.com/ResearchTriangle/1107/ >
LX-50 Web site with Technical Archives