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The muons of cosmic rays air showers in the Extreme Energy Events (EEE)project are detected with three Multi-gap Resistive Plate Chambers (MRPC) withgood tracking capability. These muon telescopes are located in high schoolsspread all over Italy. The detection of extensive air showers is made by meansof time coincidences between two distant telescopes. The vectorial componentsof the incoming directions of the muons are known, as well as the UTC time oftheir arrival on the detectors. The method to calculate the celestial(equatorial and galactic) coordinates of the incoming direction of the muons ispresented. This procedure allows recovering galactic or extragalactic sourcesof the extreme energetic cosmic rays which produce such extensive air showers.A worksheet file (muoni.xls or EEEtest.xls) contains a simulator, to producedata in the same format. This introductory method to positional astronomy formuons, useful also for neutrinos, is presented through explained formulae andan interactive worksheet, tailored for the data format of EEE(http://www.centrofermi.it/eee/).

Astronomia di Posizione per Muoni, Algoritmi per foglio elettronico (Positional Astronomy for Muons, Algorithms for electronic spreadsheet)