NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Determining Actual Time of Meridian Passages Before Computers
From: Greg R_
Date: 2007 Jan 14, 12:27 -0800
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From: Greg R_
Date: 2007 Jan 14, 12:27 -0800
Thanks for the replies on this topic. Once I got
back on the computer after sending the original query to the list, I did some
research on the various surveying and mapping agency sites (NOAA, National
Geodetic Survey, etc.) and found a treasure trove of stuff such as references to
geodetic transits, Davidson meridian instruments, etc. Seems that my question
had already been anticipated and answered several generations ago...
:-)
Here's a great link on the NOAA site with pics of some of the instruments of that earlier era: http://www.photolib.noaa.gov/historic/c&gs/astro1.html
Here's a great link on the NOAA site with pics of some of the instruments of that earlier era: http://www.photolib.noaa.gov/historic/c&gs/astro1.html
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GregR
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