These days, WXtoImg weather program has stopped starting, or even if it starts, when
"File - Update Keplers" is executed, the above error message appears and the orbital
elements cannot be updated. The cause of this phenomenon means that the target file
does not exist because the top-level domain of "celestrak.org" has changed.
> Error (HTTP/1.1 301 Moved Permanently) getting weather.txt
> from www.celestrak.com
But, I was able to get around this error by doing the following and confirmed that
WXtoImg started and worked well.
1. Download "Keplers Updater v1.0.0 (Windows 7+ 64-Bit)",
"Keplers-Updater.zip", and Extract to the same folder as wxtoimg.
https://www.wraase.de/wxtoimg/
2. Run "Keplers-Updater.exe", and
Settings URL: http://www.celestrak.org/NORAD/elements/weather.txt
Put a check, and Click "Update Kepler Data"
3. Then the new orbital element is loaded and "WXtoImg" is launched.
4. If you manually download "weather.txt" directly from the following
site and copy and paste it into the wxtoimg folder, no error will
appear even if you execute "File - Satellite Pass List".
https://celestrak.org/norad/elements/weather.txt
Reference:
http://www.inoshita.jp/freo/view/719
https://noaa-apt.gif.jp/noaa/noaa_new.htm
http://www.ne.jp/asahi/hamradio/je9pel/noaapice.htm
http://www.ne.jp/asahi/hamradio/je9pel/linuxsa4.htm
For LINUX a simple "wget" command will do the trick (sudo might be required).
https://github.com/provector/wxtoproxy/
> $ wget -O /usr/local/lib/wx/tle/weather.txt http://celestrak.org/NORAD/elements/weather.txt
Then, the latest "weather.txt" is imported into the specified folder. (figure below)
> $ cd /usr/local/bin/
> $ xwxtoimg