Re: Geostationary Eclipse Season and Geosat Flares are here!

From: Björn Gimle via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 27 Feb 2018 19:05:45 +0100
With HeavenSat it is very easy, using the F10/Sky settings for Earth Umbra,
and selecting desired dates and times.

For some reason, 2.4.9 will only show satellite tracks relative to the
Alt/Az grid -
my old 2.4.1 showed (could show?) them relative to the stars, which made it
very easy to see when some satellite would approach the shadow limit.
Attachment is for my location, UTC.
Around spring equinox near the equator, later in the southern hemisphere.

Previously I used a spreadsheet I wrote to get the RA/Dec of a large number
of points on the shadow edge, and have them plotted in SkyMap
(which can also be done in HeavenSat )

--------------------------------------------------------
Björn Gimle, COSPAR 5919
59.2617 N, 18.6169 E, 51 m
Satellite observation formats described:
http://www.satobs.org/position/IODformat.html
---------------------------------------------------------

2018-02-22 22:57 GMT+01:00 Brad Young via Seesat-l <seesat-l_at_satobs.org>:

> I don’t know if anyone else has responded Bob but it’s pretty easy.
> Instead of a table (which is probably in the archives) here is a method
> which is in the teach a guy to fish mode.
> Whenever the sun reaches the declination where are your Geosats lie, that
> is the best date to see them. For instance, for me at 36° North, Geosats
> appear at -5.3 declination. The date the sun appears at that declination is
> around March 7; from JPL Horizons Sol ephemeris:2018-Mar-07    23:09    -05
> 28
> ...
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Received on Tue Feb 27 2018 - 12:06:28 UTC

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