Re: ATM Alt-alt telescope mounts and image rotation - long post

[Andy Saulietis <iss@pvtnetworks.net>]

Mel writes,

>Alt-Alt or El-El telescopes (abbreviations for Altitude-Altitude or
>Elevation-Elevation) look like yoke mounts laid flat.  

This sounds like the USAF satellite tracking setup they had near
here (Cloudcroft NM) about 30 years ago..it was a 48" Newt & the
guys there explained that it was a 3 axis mount, one of which
was set to near the orbital pole of the satellite, the other 2 used to
track the object.

I've been working on an altitude lead-screw drive mount design & this
may well work on an alt-alt-az also..if it actually gets rid of
field rotation it might be the *answer* to large amateur size
CCD imaging. Time to do some more homework..:)


Andy Saulietis
ISS Enterprises
PO Box 1435
Cloudcroft NM 88317

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