[amsat-bb] A Modern Oscar Locator

kb2mjeff@att.net kb2m at arrl.net
Mon Apr 8 12:32:07 UTC 2019


Hi Chris, nice job. I made room for it on my desktop so I can run it all the
time...

73 Jeff kb2m

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Chris Thompson via
AMSAT-BB
Sent: Sunday, April 07, 2019 9:17 AM
To: AMSAT <AMSAT-BB at amsat.org>
Subject: [amsat-bb] A Modern Oscar Locator

I wanted a simple program that showed when target spacecraft would be above
the horizon. I remembered a picture of an old program that Rob Bruninga
posted on AMSAT-BB some time ago. I could not find that picture, but I built
something similar and it looks like this:
http://www.g0kla.com/klatrack/klatrack_dark.png

It's a simple program that plots the elevation of upcoming satellite passes
as a horizontal display and then updates it in real time.  It does a one
time calculation to fill its buffer of positions, then its pretty efficient
because it just calculates the next position it needs in the future.

The details and the download are here:
http://www.g0kla.com/klatrack/index.php

Thanks again to Dave Johnson (G4DPZ) for his port to Java of John
Maglicane's (KB2BD) predict library.

The is made available under the Gnu GPL and I will upload the code to github
when I get a chance.

73
Chris

--
Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net
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