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Herbert,
you wrote:

> "I was under the mistaken impression that star to star distances could be
> used to calibrate the arc.  I have since been thoroughly convinced
> otherwise."
>
> In a nutshell = why?

In a nutshell: because the accuracy of measuring star distances
is worse than the typical arc error of a modern sextant.

This was discussed at length many years ago, and this is a very well
tested fact.

From my experience, the most accurate measurements I was able to make
were Sun-Lunar distances. Even those can be hardly used to find the
arc error. Star distances are substantially less accurate.

Alex.



> Herbert Prinz
>
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