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The Tomographic Ionized-carbon Mapping Experiment (TIME) is a spectrometer in development for intensity mapping of the ionized carbon forbidden line [CII] (158 μm) from the epoch of reionization, to be used as an indication of star formation. The resulting wavelength corresponds to the redshifted carbon monoxide spectral lines from later periods, e.g., peak star formation, requiring analysis to distinguish which is which. TIME is independent of 21-cm experiments, and offers the opportunity to correlate results.
An initial version of the TIME spectrometer (termed TIME-PILOT), supported a reduced field of view, with plans for the "full" version, termed TIME-NG. Various telescopes were considered, including the James Clerk Maxwell Telescope, but deployment for engineering and commissioning was carried out on the ARO 12m Telescope, with science operation (termed TIME-ARO) planned for 2025. Later, after modification, it is to be reinstalled on the Leighton Chajnantor Telescope (LCT, at Llano de Chajnantor Observatory, which is the Caltech Submillimeter Observatory (CSO) redeployed from Hawaii, due in 2026) for further science operation (termed TIME-LCT). (I'm not certain whether these deployments and plans are the limited "TIME-PILOT" version or the projected "TIME-NG" version.)