The OSIRIS-REx Thermal Emission Spectrometer (OTES) Instrument

被引：94

作者：

Christensen, P. R. ^{[1
]}

Hamilton, V. E. ^{[2
]}

Mehall, G. L. ^{[1
]}

Pelham, D. ^{[1
]}

O'Donnell, W. ^{[1
]}

Anwar, S. ^{[1
]}

Bowles, H. ^{[1
]}

Chase, S. ^{[1
]}

Fahlgren, J. ^{[1
]}

Farkas, Z. ^{[1
]}

Fisher, T. ^{[1
]}

James, O. ^{[3
]}

Kubik, I. ^{[1
]}

Lazbin, I. ^{[4
,5
]}

Miner, M. ^{[1
]}

Rassas, M. ^{[1
]}

Schulze, L. ^{[1
]}

Shamordola, K. ^{[1
]}

Tourville, T. ^{[1
]}

West, G. ^{[4
,5
]}

Woodward, R. ^{[1
]}

Lauretta, D. ^{[6
]}

机构：

[1] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA

[2] Southwest Res Inst, Boulder, CO USA

[3] Goddard Space Flight Ctr, Greenbelt, MD USA

[4] Moog Broad Reach, Tempe, AZ USA

[5] AZ Space Technol, Gilbert, AZ USA

[6] Univ Arizona, Tucson, AZ USA

来源：

SPACE SCIENCE REVIEWS | 2018年 / 214卷 / 05期

基金：

美国国家航空航天局;

关键词：

Thermal emission spectrometer; Asteroid; Bennu; OSIRIS-REx; SURFACE-ROUGHNESS; MINERALOGY; ROCKS;

D O I：

10.1007/s11214-018-0513-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 mu m () with a spectral sample interval of 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 similar to 0.855 mu m 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 between 300 and . The absolute integrated radiance error is for scene temperatures ranging from 150 to 380 K. The overall OTES envelope size is , 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.

引用

页数：39

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