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Python 3 (anaconda recommended)
DS9 https://sites.google.com/cfa.harvard.edu/saoimageds9 (on Mac we recommend the X11 version as is the simplest to set up and use with XPA and the IGRINS Observing Planner)
XPA (download here https://sites.google.com/cfa.harvard.edu/saoimageds9/download?authuser=0)
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