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From: Bill (no email)
Date: Thu Jun 22 2006 - 00:41:03 EDT
> When taking a noon sight, lets say LAN is 1208. What is a good time bracket to
> consider ( how much before and after LAN). What is an approaite interval for
> the sights (every X minutes)?
> Thank you
Guy
Depends on your latitude and the date. In some cases the sun can hang up
there (same elevation for cel nav purposes) for a relatively long period of
time. In other situations, it is more fleeting. Do a few what-ifs near
solstices and equinoxes at different latitudes with the same time intervals
before and after LAN and determine the spread.
As an example, right about now at the north pole the elevation of the sun at
LAN stays pretty much the same for a LONG period of time. Pretty much the
same all day, (with daylight for 24 hours). Play with that.
I don't mean to seem curt, but I'm of five days of sailing in seven hours,
so time is a limiting factor.
Bill
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