@article{7530ab3e98514265953d7c6c02e2149c,
title = "The OSIRIS-REx Thermal Emission Spectrometer (OTES) Instrument",
abstract = "The OSIRIS-REx Thermal Emission Spectrometer (OTES) will provide remote measurements of mineralogy and thermophysical properties of Bennu to map its surface, help select the OSIRIS-REx sampling site, and investigate the Yarkovsky effect. OTES is a Fourier Transform spectrometer covering the spectral range 5.71–100 μm (1750–100cm−1) with a spectral sample interval of 8.66cm−1 and a 6.5-mrad field of view. The OTES telescope is a 15.2-cm diameter Cassegrain telescope that feeds a flat-plate Michelson moving mirror mounted on a linear voice-coil motor assembly. A single uncooled deuterated l-alanine doped triglycine sulfate (DLATGS) pyroelectric detector is used to sample the interferogram every two seconds. Redundant ∼0.855 μm laser diodes are used in a metrology interferometer to provide precise moving mirror control and IR sampling at 772 Hz. The beamsplitter is a 38-mm diameter, 1-mm thick chemical vapor deposited diamond with an antireflection microstructure to minimize surface reflection. An internal calibration cone blackbody target provides radiometric calibration. The radiometric precision in a single spectrum is ≤2.2×10−8Wcm−2sr−1/cm−1 between 300 and 1350cm−1. The absolute integrated radiance error is < 1 % for scene temperatures ranging from 150 to 380 K. The overall OTES envelope size is 37.5×28.9×52.2cm, and the mass is 6.27 kg. The power consumption is 10.8 W average. OTES was developed by Arizona State University with Moog Broad Reach developing the electronics. OTES was integrated, tested, and radiometrically calibrated on the Arizona State University campus in Tempe, AZ.",
keywords = "Asteroid, Bennu, OSIRIS-REx, Thermal emission spectrometer",
author = "Philip Christensen and Hamilton, {V. E.} and Mehall, {G. L.} and D. Pelham and W. O{\textquoteright}Donnell and S. Anwar and H. Bowles and S. Chase and J. Fahlgren and Z. Farkas and T. Fisher and O. James and I. Kubik and I. Lazbin and M. Miner and M. Rassas and L. Schulze and K. Shamordola and T. Tourville and G. West and R. Woodward and D. Lauretta",
note = "Funding Information: We would like to thank Mary Walker, Jim Hendershot, and their team for their excellent support in the OSIRIS-REx Payload Office, Sam Pellicori for his engineering support, Tara Fisher and Ashley Toland for priceless administrative support, and Selex-Galileo, Diamond Materials, General Dynamics, Avior, BEI, TelAztec, and L&M Machining for their support in the OTES fabrication. We thank Ed Cloutis, Josh Bandfield, and an anonymous reviewer for very helpful reviews that significantly improved the manuscript. This material is based upon work supported by the National Aeronautics and Space Administration under contract NNM10AA11C issued through the New Frontiers Program. OSIRIS-REx Edited by Dante Lauretta and Christopher T. Russell Funding Information: Acknowledgements We would like to thank Mary Walker, Jim Hendershot, and their team for their excellent support in the OSIRIS-REx Payload Office, Sam Pellicori for his engineering support, Tara Fisher and Ashley Toland for priceless administrative support, and Selex-Galileo, Diamond Materials, General Dynamics, Avior, BEI, TelAztec, and L&M Machining for their support in the OTES fabrication. We thank Ed Cloutis, Josh Bandfield, and an anonymous reviewer for very helpful reviews that significantly improved the manuscript. This material is based upon work supported by the National Aeronautics and Space Administration under contract NNM10AA11C issued through the New Frontiers Program. Publisher Copyright: {\textcopyright} 2018, The Author(s).",
year = "2018",
month = aug,
day = "1",
doi = "10.1007/s11214-018-0513-6",
language = "English (US)",
volume = "214",
journal = "Space Science Reviews",
issn = "0038-6308",
publisher = "Springer Netherlands",
number = "5",
}