(near-infrared spectrograph on the Hale Telescope)
TripleSpec is a near-infrared spectrograph
covering 0.095-2.46 μm, with a spectral resolution
of 2500-to-2700. More than one has been built: one is installed on
the Hale Telescope and another at the ARC 3.5m telescope
at the Apache Point Observatory (APO).
Cerro Tololo Inter-American Observatory's TripleSpec 4.1 (aka ARCoIRIS) is a follow-on.
I believe it is called "TripleSpec" because after
a grating spreads the infrared light by wavelength,
it is passed through three prisms to disperse it
in the crosswise direction.
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Referenced by pages:
Víctor M. Blanco Telescope
cross dispersion spectrograph