Re: [APML] Drift alignment problem - wedge mounted scope

["Bradley" <bhope@thorngarden.net>]

Gene;

Yes, the Dec worm is spring loaded, just like the RA. This could be a
possible cause if the Dec axis had something loose in it...but I already
checked that and wasn't able to detect any untoward movement, I'll recheck
just to be sure as well as making sure all the setscrews etc are snugged
well. With nothing loose in the axis, I'm not sure how else the light spring
pressure could be a possible cause.

Steve;

That could very easily be a cause if one of the lateral legs were at
fault...but the scope lives on  a permanent pier in an observatory. Sorry, I
should have stated that in my original post.

Bradley

Thorn Garden Observatory
http://astronomy.thorngarden.net

----- Original Message ----- 
From: "Gene Horr" <genehorr@houston.rr.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Thursday, July 28, 2005 6:21 AM
Subject: RE: [APML] Drift alignment problem - wedge mounted scope

> Strike one <g>.  The next idea would be the worm.  I don't remember
whether
> or not the DEC worm is spring loaded like the RA is.  I don't think this
> is likely but it is possible that the worm spring is slightly moving the
> OTA.  My test would be to leave it in the position for 30 minutes or so
> and then test for drift.

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