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Space Science Reviews

, Volume 208, Issue 1–4, pp 213–238 | Cite as

Performance of Hayabusa2 DCAM3-D Camera for Short-Range Imaging of SCI and Ejecta Curtain Generated from the Artificial Impact Crater Formed on Asteroid 162137 Ryugu (1999 \(\mbox{JU}_{3}\))

  • K. IshibashiEmail author
  • K. Shirai
  • K. Ogawa
  • K. Wada
  • R. Honda
  • M. Arakawa
  • N. Sakatani
  • Y. Ikeda
Article

Abstract

Deployable Camera 3-D (DCAM3-D) is a small high-resolution camera equipped on Deployable Camera 3 (DCAM3), one of the Hayabusa2 instruments. Hayabusa2 will explore asteroid 162137 Ryugu (1999 JU3) and conduct an impact experiment using a liner shooting device called Small Carry-on Impactor (SCI). DCAM3 will be detached from the Hayabusa2 spacecraft and observe the impact experiment. The purposes of the observation are to know the impact conditions, to estimate the surface structure of asteroid Ryugu, and to understand the physics of impact phenomena on low-gravity bodies. DCAM3-D requires high imaging performance because it has to image and detect multiple targets of different scale and radiance, i.e., the faint SCI before the shot from 1-km distance, the bright ejecta generated by the impact, and the asteroid. In this paper we report the evaluation of the performance of the CMOS imaging sensor and the optical system of DCAM3-D. We also describe the calibration of DCAM3-D. We confirmed that the imaging performance of DCAM3-D satisfies the required values to achieve the purposes of the observation.

Keywords

DCAM3 Hayabusa2 Asteroid Impact experiment Camera 

Notes

Acknowledgements

The authors thank the engineers of Meisei Electric Co., Ltd. for their dedication in conducting the verification tests of DCAM3-D. We appreciate the assistance in the integrating sphere test from the technicians at JAXA’s Tsukuba Space center. We thank Dr. David C. Humm and Dr. Michael Ravine for their many constructive comments and suggestions that helped improve the manuscript.

References

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • K. Ishibashi
    • 1
    Email author
  • K. Shirai
    • 2
  • K. Ogawa
    • 3
  • K. Wada
    • 1
  • R. Honda
    • 4
  • M. Arakawa
    • 3
  • N. Sakatani
    • 5
  • Y. Ikeda
    • 6
  1. 1.Planetary Exploration Research CenterChiba Institute of TechnologyNarashinoJapan
  2. 2.The Graduate University for Advanced StudiesHayamaJapan
  3. 3.Graduate School of ScienceKobe UniversityNada-kuJapan
  4. 4.Kochi UnivsesityKochi-shiJapan
  5. 5.School of Science and TechnologyMeiji UniversityTama-kuJapan
  6. 6.PhotocodingSakyo-kuJapan

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