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      Ground and In-Flight Calibration of the OSIRIS-REx Camera Suite

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          The OSIRIS-REx Camera Suite (OCAMS) onboard the OSIRIS-REx spacecraft is used to study the shape and surface of the mission’s target, asteroid (101955) Bennu, in support of the selection of a sampling site. We present calibration methods and results for the three OCAMS cameras—MapCam, PolyCam, and SamCam—using data from pre-flight and in-flight calibration campaigns. Pre-flight calibrations established a baseline for a variety of camera properties, including bias and dark behavior, flat fields, stray light, and radiometric calibration. In-flight activities updated these calibrations where possible, allowing us to confidently measure Bennu’s surface. Accurate calibration is critical not only for establishing a global understanding of Bennu, but also for enabling analyses of potential sampling locations and for providing scientific context for the returned sample.

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          Space Sci Rev
          Space Sci Rev
          Space Science Reviews
          Springer Netherlands (Dordrecht )
          23 January 2020
          23 January 2020
          : 216
          : 1
          [1 ]ISNI 0000 0001 2168 186X, GRID grid.134563.6, Lunar and Planetary Laboratory, , University of Arizona, ; Tucson, AZ USA
          [2 ]United States Geological Survey Astrogeology Science Center, Flagstaff, AZ USA
          [3 ]ISNI 0000 0004 0637 6666, GRID grid.133275.1, Solar System Exploration Division, , NASA Goddard Space Flight Center, ; Greenbelt, MD USA
          [4 ]ISNI 0000 0001 2151 536X, GRID grid.26999.3d, Department of Earth and Planetary Science, , The University of Tokyo, ; Tokyo, Japan
          [5 ]ISNI 0000 0004 0637 3991, GRID grid.423138.f, Planetary Science Institute, ; Tucson, AZ USA
          [6 ]ISNI 0000 0001 2185 8768, GRID grid.53857.3c, Space Dynamics Laboratory, , Utah State University, ; Logan, UT USA
          [7 ]ISNI 0000 0000 9608 0631, GRID grid.257949.4, Department of Physics and Astronomy, , Ithaca College, ; Ithaca, NY USA
          © The Author(s) 2020

          Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit

          Funded by: FundRef, National Aeronautics and Space Administration;
          Award ID: NNM10AA11C
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          © Springer Nature B.V. 2020


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