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Open AccessLetter

In-Flight Calibration and Performance of the OSIRIS-REx Visible and IR Spectrometer (OVIRS)

1
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
2
Physics Department, Catholic University of America, Washington, DC 20064, USA
3
NASA Postdoctoral Fellow, Greenbelt, MD 20771, USA
4
Science Systems and Applications, Inc., Greenbelt, MD 20771, USA
5
Lunar and Planetary Lab, University of Arizona, Tucson, AZ 85721, USA
*
Author to whom correspondence should be addressed.
Remote Sens. 2018, 10(9), 1486; https://doi.org/10.3390/rs10091486
Received: 1 August 2018 / Revised: 6 September 2018 / Accepted: 16 September 2018 / Published: 18 September 2018
Performance of the Origins, Spectral Interpretation, Resource Identification, Security–Regolith Explorer (OSIRIS-REx) Visible and InfraRed Spectrometer (OVIRS) instrument was validated, showing that it met all science requirements during extensive thermal vacuum ground testing. Preliminary instrument radiometric calibration coefficients and wavelength mapping were also determined before instrument delivery and launch using NIST-traceable sources. One year after launch, Earth flyby data were used to refine the wavelength map by comparing OVIRS spectra with atmospheric models. Near-simultaneous data from other Earth-orbiting satellites were used to cross-calibrate the OVIRS absolute radiometric response, particularly at visible wavelengths. Trending data from internal calibration sources and the Sun show that instrument radiometric performance has been stable to better than 1% in the 18 months since launch. View Full-Text
Keywords: calibration; radiometry; spectrometer calibration; radiometry; spectrometer
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MDPI and ACS Style

Simon, A.A.; Reuter, D.C.; Gorius, N.; Lunsford, A.; Cosentino, R.G.; Wind, G.; Lauretta, D.S.; The OSIRIS-REx Team. In-Flight Calibration and Performance of the OSIRIS-REx Visible and IR Spectrometer (OVIRS). Remote Sens. 2018, 10, 1486.

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