Exposure Time Calculators
Advanced Camera For Surveys (ACS) ETCs
Supported modes: imaging, ramp filter, spectroscopic
Cosmic Origins Spectrograph (COS) ETCs
Spectroscopy, imaging and (imaging) target acquisition are currently offered.
Space Telescope Imaging Spectrograph (STIS) ETCs
Imaging, spectroscopy and target acquisition are currently offered.
Wide Field Camera 3 (WFC3) ETCs
Imaging and spectroscopy ETCs are currently offered for both the UVIS and IR channels.