A Hilbert space mission: The spectrophotometric calibration of Gaia

Author: Michael Weiler

 

Abstract: ESA's space mission Gaia is now scanning the whole sky for about two and a half years from its orbit around L2. Among the three instruments onboard the Gaia spacecraft is a low-resolution spectrograph, collecting hundreds of billions of near-UV to near-IR spectra of more than a billion objects in the sky. This talk lines out the principles of how to calibrate such an amount of spectroscopic data, collected with an instrument of truly unique design - and thus how to make Gaia's spectra fit for upcoming scientific exploitation.