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An overview of instrumentation for the Large Binocular Telescope (LBT) is presented. Optical instrumentation
includes the Large Binocular Camera (LBC), a pair of wide-field (27′ x 27′) mosaic CCD imagers at the prime
focus, and the Multi-Object Double Spectrograph (MODS), a pair of dual-beam blue-red optimized long-slit
spectrographs mounted at the left and right direct F/15 Gregorian foci incorporating multiple slit masks for
multi-object spectroscopy over a 6′ field and spectral resolutions of up to 2000. Infrared instrumentation includes
the LBT Near-IR Spectroscopic Utility with Camera and Integral Field Unit for Extragalactic Research (LUCI),
a modular near-infrared (0.9–2.5 μm) imager and spectrograph pair mounted at the left and right front bent
F/15 Gregorian foci and designed for seeing-limited (FOV: 4′ × 4′) imaging, long-slit spectroscopy, and multiobject
spectroscopy utilizing cooled slit masks and diffraction limited (FOV: 0′.5 × 0′.5) imaging and long-slit
spectroscopy. Strategic instruments under development that can utilize the full 23–m baseline of the LBT
include an interferometric cryogenic beam combiner with near-infrared and thermal-infrared instruments for
Fizeau imaging and nulling interferometry (LBTI) and an optical bench near-infrared beam combiner utilizing
multi-conjugate adaptive optics for high angular resolution and sensitivity (LINC-NIRVANA). LBTI is currently
undergoing commissioning on the LBT and utilizing the installed adaptive secondary mirrors in both single–
sided and two–sided beam combination modes. In addition, a fiber-fed bench spectrograph (PEPSI) capable of
ultra high resolution spectroscopy and spectropolarimetry (R = 40,000–300,000) will be available as a principal
investigator instrument. Over the past four years the LBC pair, LUCI1, and MODS1 have been commissioned
and are now scheduled for routine partner science observations. The delivery of both LUCI2 and MODS2 is
anticipated before the end of 2012. The availability of all these instruments mounted simultaneously on the LBT
permits unique science, flexible scheduling, and improved operational support.
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