Spec-S5 will consist of a pair of telescopes each with robotically-actuated, fiber-fed spectrographs capable of simultaneously measuring 12,852 spectra over the wavelength range 360-980 nm. The Spec-S5 project will substantially upgrade the platform that is currently in use by the Dark Energy Spectroscopic Instrument (DESI) on the Mayall telescope at Kitt Peak, Arizona, to a 6.0-meter primary mirror with 12,852 fiber robots feeding 23 three-channel spectrographs. A duplicate instrument would be constructed on the Mayall’s twin telescope, the Blanco at Cerro Tololo, Chile, where the Dark Energy Camera currently operates.
More information can be found on the project’s website; Spec-S5.