NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Emergency Navigation Was: Black boxes in navigation Now:
From: Gary LaPook
Date: 2012 Jul 13, 23:12 -0700
From: Gary LaPook
Date: 2012 Jul 13, 23:12 -0700
| I don't see how Pythagoras can help you but the law of sines can but then you need a table of sines or a calculator. The rule of 60 does a good job up to about 35 degrees.for calculating the sine of an angle. Polaris is easier to use than the sun because its declination changes very slowly and is now at 89° 18' so it is 42' from the pole. If you ignore making a correction for this you could still find your latitude within 42'. It is easy to make a correction for this by keeping in mind that polaris is lined up with the trailing star in Cassiopeia so visualize a line from that star to Polaris and estimate how far from the 270-90 position and estimate the correction. gl --- On Fri, 7/13/12, G Becker <george@gwbeckerpls.com> wrote:
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