NavList:

   

Reply

I would like to re-iterate one point for those NOT
mathematically inclined. (Mathematicians frequently use
the words "and" and "or" in a precise technical sense,
which may be different from their daily use by other people).

So I restate the rule in the form of an algorithm
(or in the style of tax form instructions).

1. Look at the altitude. If less than 60d you can average safely.
2. If the altitude is more than 60 degrees look at the asymuth.
If the body is 20 degrees away from S and 20 degrees away from N,
you can average safely.

So the only "prohibited zone" consists of the
two sectors with vertices
at zenith, 30 degrees long and 40 degrees wide, whose
bisector is the meridian.

Alex.

   

Reply