RE: [APML] Astro-Physics Field Flatner

["D Kaestner" <kaestner@surewest.net>]

Steve,

That could be I suppose!
There have been the occasions when I have gotten this mount to track! And
very well I might add.
If nothing else I have removed all the slop and shouldn't see all the
bumping around thru the tracking scope.....lol
Still kind-a new at this guys so please forgive the ignorance!
I haven't been able to get it out to test since going thru it so time will
tell...............
Thanks again for the responses.

Dan K.

-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org]On
Behalf Of steve banbury
Sent: Monday, August 29, 2005 3:56 PM
To: Discussion of Film Astrophotography
Subject: Re: [APML] Astro-Physics Field Flatner

Hi Dan---if your scope/mount isn't perfectly polar aligned, your field
of view will
tend to drift up or down in declination.  How fast is a function of the
misalignment.
For reasonably well aligned systems only an occasional adjustment in Dec
would
be required.

How fast is your easterly drift?  Could it be your clock (stepper motor
pulses) are a
little slow?

steve


D Kaestner wrote:

>Ladies & Gents,
>
>I have a real stupid question!
>With an EQ mount does the Dec motor run while tracking?
>Or, is it used just for adjustments.
>Makes sense if polar aligned that RA would be the only one running! Right?
>The reason I ask is that while tracking I'm getting Easterly drift.
>The maker of the mount suggested tearing it down to check gear wear and for
>burrs!
>It's the Orion EQ3 mount. Did a complete tear down and found nothing major
>other then not enough grease on the tapered roller bearings. That and a
>whole lotta slop between drive shaft & gears!!!!!!
>I was running just the mount and noticed that the Dec motor wasn't running
>unless controller buttons were pushed!
>Then was stupid enough to write to Orion about the problem........LOL
>There response was it doesn't run but for adjustments? And now that I think
>about it!   LOL
>Can someone maybe give a reason for the easterly drift??????
>
>
>Thanks
>Dan K.
>
>
>
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