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Re: determination of longitude and the prime vertical
From: Gary LaPook
Date: 2007 Apr 28, 20:08 -0700

Gary writes:

And the SHA for polaris is off more than 50 minutes on Omar Reis'
Online Nautical Almanac web site..

On Apr 12, 12:42 pm, Bill  wrote:
> Good eye George,
>
> First, there is a typo in LHA.  It should read 71d 09!9.  My apologies.  The
> rest of information is as the site presented it.
>
> It is quite possible this site's program
> (http://www.tecepe.com.br/cgi-win/cgiasvis.exeby Omar Reis) may be off on
> GHA, LHA etc, by more than a rounding error in it's Navigator Star Finder
> section.  It depends on the body.  Other areas of concern are stated RA's of
> bodies converted to SHA and compared to the N.A.  Also note the declinations
> given for Polaris for May: Site 89d 16!7, N.A. 89d 17!8.
>
> F


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