NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Extremely poor conditions??
From: Alexandre Eremenko
Date: 2012 Mar 20, 19:59 -0700
From: Alexandre Eremenko
Date: 2012 Mar 20, 19:59 -0700
Brendan,
You wrote:
> can send some more on this if you wish
> later.
Yes, please. I am interesting in sub-refraction.
It was conjectured that refraction in the usual direction
can raise the horizon, that is lead to an anomalous dip.
This is somewhat difficult to imagine, because the ray travels only few miles
from the horizon to my eye, while the usual refraction is the effect
on a ray from the whole atmsphere.
Alex.
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