I checked my selection of stars by use of the 2102-D and in the northern hemisphere there are never fewer than three stars above the horizon and usually 5 to 7. In the southern hemisphere, south of 55 south, there are occasions when only 2 stars are above the horizon, but usually more even that far south. North of 55 south there are at least 3 stars up and usually more,
gl
--- On Tue, 3/13/12, Gary LaPook <garylapook@pacbell.net> wrote:
From: Gary LaPook <garylapook@pacbell.net>
Subject: [NavList] Re: 3-Star Fix - "Canned Survival Problem"
To: NavList@fer3.com
Date: Tuesday, March 13, 2012, 2:26 AM
I wanted them well arrayed in SHA, bright, and mostly at low declinations so they could be used from both hemispheres.
I settled on
Fomalhaut;
Altair;
Vega;
Antares;
Spica;
Regulus;
Pollux;
Sirius;
Capella;
Schedar.
All are first magnitude except Schedar which is 2nd magnitude but was the best I could find to fill in the gap in SHAs. The furthest south is Fomalhaut at 29 south so it is visible in most of the northern hemisphere. Only Capella and Schedar are difficult to see from far southern latitudes.
gl
--- On Sun, 3/11/12, Sean C <yhshuh@aol.com> wrote:
From: Sean C <yhshuh@aol.com>
Subject: [NavList] Re: 3-Star Fix - "Canned Survival
Problem"
To: NavList@fer3.com
Date: Sunday, March 11, 2012, 1:23 PM
On 14 Jun 2008, Gary J. LaPook wrote:
"Being the conscientious navigator that I am, I followed my usual practice of memorizing some data from the 2008 Nautical Almanac so that I would have it available for emergency use.[...]I also memorized the SHAs and the Declinations of ten of the navigation stars ( nobody could memorize all 57) which should be enough for emergency use as tabulated for July 1st so that the values will be reasonable for the whole year." I'm assuming you chose the stars based on a good distribution in the sky and also on magnitude. So which stars did you settle on? (And did you choose only for the northern or southern hemispheres or both?)
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