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Frank,
Do you know a modern sextant that has
collimation adjustment?
(I don't, except SNO-T inverting scope).
The adjusting screws are mounted on the scope.

Modern sextants (or more precisely, the mounting
forks of their scopes) are supposed to be factory adjusted,
and the only thing you can do is to use a hummer
(as Bill proposed once).
Alex..


On Sun, 13 Feb 2005, Frank Reed wrote:

> " With that said, if you do buy another telescope for your
> sextant for  lunars or other high-precision work, it is an excellent
> idea, in my  experience, too check that the telescope is properly
> aligned when mounted on  your sextant.  One advantage of the inverting
> Russian (Cho-T) scopes is  that they can be aligned; most prism
> telescopes cannot be aligned."
>
> Why not? Is it something about the mounting? I'm not sure this is an  issue.
>
> By the way, a lower-case Cyrillic H is still an H. So it's SNO-T or better
> yet SNO-T, but surely not Cho-T.
>
> -FER
> 42.0N  87.7W, or 41.4N  72.1W.
> www.HistoricalAtlas.com/lunars
>

   

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