Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: 16" LX200 - does yours hold alignment?


 

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Subject: Re: [M]: 16" LX200 - does yours hold alignment?
From: Joe Hartley
Reply To: mapug@shore.net
Date: Thu Aug 10 14:10:33 2000

While you're here, how about checking out the Astronomy Book List ?

> I might as well throw in my 2cents worth. Ours has never worked right as
> far as slewing is concerned (up to 30arcmin off in DEC on medium length
> slew)

We had some serious problems with the Dec axis for a while, but then
I learned how to tighten up the worm so that there's no horizontal
play. Boy, what a difference that made!

> but I would assume part of your problem is the altaz mounting. When
> it starts up out of park and does the home search, I assume it looks for
> its "zero position", basically 0 Dec, 0 Hour Angle. If its in altaz it
> would have to "correct" this to its altaz park position.

Yes, that is the first thing it does. Hmmmm, I know our docs say that the
first thing that should be done upon powering up (after the zero position
is found) is to do a Home->Find. I'm assuming that's what you mean by
the last sentence above, but please correct me if I'm wrong!

> I would like to test this out myself, but since our 16" is getting
> repaired for the 2nd time in 2 years for the same pointing problem and
> the homing function failing, I can't.

Yikes! Our scope has been fine so far (knock wood), barring this rather
small problem. I can always get the night's alignment to be spot-on
with a 2-star alignment; I actually have never tried a 1-star! I think
that might be a necessary part of the startup-sequence from now on. I
can usually find a pretty bright star well before sunset with the scope.

Thanks for the info, and good luck with your scope!


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