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Astrometry.net
Make sure your path variable is correctly set: https://github.com/anjavdl/PHY517_AST443/wiki/Bash-set-up,-scripts,-and-loops
The executable for astrometry.net is called solve-field. Full instructions are available at http://astrometry.net/doc/readme.html.
You should first set up your own temporary directory for the temporary files that solve-field will write, e.g. /astrolab/<semester>/<username>. Its default is to write to /tmp which fills up rather quickly!
To solve the astrometry of a field with approximate knowledge of the center coordinates, run
solve-field --ra [raguess] --dec [decguess] --radius [searchrad] [filename] -m /astrolab/<semester>/<username>
and replacing [raguess] etc. with your estimates of the center position (in decimal degrees). The search radius is specified in degrees.
If you get a python error when trying to run solve-field, execute the line export PATH=/usr/local/conda27/conda27/bin:$PATH in your terminal and try again.
Also see https://github.com/anjavdl/PHY517_AST443/wiki/Bash-set-up,-scripts,-and-loops .