Next message: Royer, Doug: "CelNav without sextant"
Here is a Cel Nav method even without radio:-)
I only assume we have a reasonable watch (available
at Wall Mart) and an almanac. And that the Moon
is available and moves in the "correct direction" :-)
That's all. And a clear sky.
You time the sunset using your watch.
Then you time an occultation to check your watch
against GMT.
And then you time the sunrise using the same watch.
Potential problems:
1. How precisely you can time a sunrise/sunset?
(The problem is refraction. The alt. is "zero",
or more precisely, something like 15')
2. To use the occultation you need the approx.
altitude of the moon at this moment, (because
of the parallax, and less importantly, refraction),
so you need your DR
place.
Alex.
