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Old November 7th 18, 10:03 PM posted to sci.astro.amateur
Martin Brown[_3_]
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Posts: 189
Default Geostationary satellites

On 07/11/2018 16:05, Gerald Kelleher wrote:
The same surface rotation responsible for the variations in the
natural noon cycle and isolated as the Polar day/night cycle
(parallel to the orbital plane), is registered by geostationary
satellites as a daily drift.


No. To first order they sit above one point on the Earth's equator with
just a few minor purturbations mostly from the sun and the moon.

You can photograph them relatively easily with time exposures and an
untracked camera so that the stars trail and the faint geostationary
satellites do not. The clue is in their name *GEO*stationary.

Some nice time lapse images of the geostationary line of birds he

https://petapixel.com/2015/10/07/geo...ky-time-lapse/

The trick to observing them is catching them at the time of year when
they give optimum specular reflections of sunlight or a big scope.
For once you don't need to track the stars - they drift past.

https://www.calsky.com/?geosat=

--
Regards,
Martin Brown