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Then, here is a tutorial you can play with on FITS files. This will use ipython to look at data in an image. You should know how to start a iPython or Jupyter notebook from your physics classes already. If not ask one of the other LSST people.
httphttps://wwwlearn.astropy.org/astropy-tutorials/FITS-images.html
Go ahead and do this. Some of the other astropy ones are good too.
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