Hi Roderick:
That's an interesting photo. It shows that the Earth's motion causes
the stars to drift and so they are of no use in identifying which sat
you're seeing.
DBS 2 is at 100.77 deg W
DBS 3 is at 100.87 deg W
DirectTV 1R is at 101.26 W
The reason you don't see a string is that this is a close up of one
slot, nominally 101 W.
Have Fun,
Brooke Clarke
http://www.PRC68.com
R Wall wrote:
Hi Brent,
The following links shows a photo taken of five geostationary
satellites (using 5 hour exposure). I would have thought that there
would be more than five satellites all in a line, why only five?
http://www.noao.edu/outreach/press/pr01/images/sat_sky_close_lg.jpg
http://www.noao.edu/outreach/press/pr01/0106images.html
Roderick Wall.
-----Original Message----- From: Brent
Sent: Friday, December 10, 2010 7:55 AM
To: Sundial List
Subject: re: stop the earth
So with the link provided by Richard Langley I can see geostationary
satellites with a telescope:
<http://www.satobs.org/geosats.html>
I think if I did that I could determine my latitude by measuring the
angle of the satellite from the horizon on my north/south meridian.
But now I can also determine my longitude by measuring the angle of
the satellite from my east/west horizon. Of course it will be in
relation to the satellite, not to the Greenwich meridian.
Does this sound correct?
If so, I could navigate a boat with just a telescope, a compass and a
protractor and not need a clock to tell me Greenwich Mean Time?
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