Next message: Fred Hebard: "Re: Instumental error?"
> > I know a very clever method of calibrating your sextant
> > "at home" that is without stars, but you need a theodolite
> > or another instrument more precise than the sextant,
> > and with precise level.
> > Can describe the method to the list if anyone is interested.
> > (I recently read about it in one XIX century paper on
> > the Internet).
> Please do publish.
> Bill
The article is available on:
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=
1865MNRAS..25...56T&db_key=AST
but I am not sure whether it's free or Purdue pays for
subscription.
But I am afraid that my conclusion that it is a clever method
was somewhat premature:-)
Trying to describe it with my own words I found that it is
hardly practiceable with the sort of ordinary theodolites
I've ever seen:-) A theodolite with hudge objective lens
is needed...
Alex.
