#AthenaNuggets: Flashy calibration for the Athena/X-IFU X-ray spectrometer
Cor de Vries - a member of the Athena/X-IFU SRON team - explains the calibration procedure to establish for each recorded photon its energy in the #Athenanuggets 56. This calibration procedure will use a set of calibration sources that will be electrically powered. A good design of these calibration sources will be vital to interpreting the X-ray spectra of the astronomical sources.