Orateur
Description
StarDICE is a metrology experiment with the goal of establishing
precise flux references for the Vera Rubin Observatory. The success of
this enterprise is expected to boost the constraining power of the
supernovae survey (as measured by the DETF FoM) by a factor 2. To this
effect, a 16 inches robotic telescope installed at the Observatoire de
Haute Provence is conducting a long duration survey of the apparent
flux of the 3 primary spectrophotometric standard stars of the CALSPEC
library in the 6 $ugrizy$ bands. This effort is coupled with an
instrumental R&D to perform an absolute calibration of the
transmission of this instrument, completing the link between the
astrophical flux scale and the laboratory definition of the optical
watt maintained by the NIST.
In this contribution, we propose to review the current status of the
experiment, in light of recent progress on the front of the in-situ
absolute calibration of the telescope.