Initial calibration of WFC3 has taken place on the ground in simulated orbital conditions. Shortly after launch, observations will be used to assess the on-orbit performance of the camera during a period called SMOV. As with the other HST instruments, calibrations will be periodically updated through new observations campaigns every year.
A summary of HST calibration in the current cycle, and a comparison with prior cycles, may be found on the HST Calibration Plan webpage. Statistics on WFC3 usage for Cycle 24 science programs may be found on the Instrument Usage webpage.
Calibration Plans and Results