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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Instumental error?
From: Alexandre Eremenko
Date: 2005 Apr 20, 11:21 -0500
From: Alexandre Eremenko
Date: 2005 Apr 20, 11:21 -0500
> > 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.
