Re: Aiming A Satellite Dish w/o a Satellite In Place

Georges Jullien wrote:
"Barry S." <nntp@xxxxxxxxxxxx> wrote in: d1guo29cguqjajhievpg20fud6ghsk36ua@xxxxxxxxxx
Although not related to GPS, I was wondering if anyone knew the answer
to this..

If you are putting up a satellite dish for a satellite that is not yet
in orbit. How does one aim it? Telescope? Reference to celestial
bodies? Total Station and coordinates?

Anyone know?

http://perso.numericable.fr/gjullien/satellite.htm gives the time when the moon (twice a month) or the sun (twice a year) is behind a geostationary satellite.

That only works for the horizontal angle, or if you're close to the equator: Since the sats are at significantly less than infinite distance, the vertical angle is less than the angle to the moon.

OTOH, the approximately 23 degree tilt of the Earth itself leads to the same kinds of problems, i.e. you do have to know what you're doing.:-)

Terje
--
- <Terje.Mathisen@xxxxxxxxxxxxx>
"almost all programming can be viewed as an exercise in caching"
.

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