The C1XS X-ray Spectrometer on Chandrayaan-1

M. Grande, B. J. Maddison, C. J. Howe, B. J. Kellett, P. Sreekumar, J. Huovelin, Ian A. Crawford, C. L. Duston, D. F. Smith, M. Anand, N. Bhandari, A. C. Cook, V. A. Fernandes, B. H. Foing, O. Gasnault, J. N. Goswami, A. D. Holland, K. H. Joy, D. Kochney, D. J. LawrenceS. Maurice, T. Okada, S. Narendranath, C. Pieters, D. A. Rothery, S. S. Russell, A. Shrivastava, B. M. Swinyard, M. Wilding, M. Wieczorek

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The Chandrayaan-1 X-ray Spectrometer (C1XS) is a compact X-ray spectrometer for the Indian Space Research Organisation (ISRO) Chandrayaan-1 lunar mission. It exploits heritage from the D-CIXS instrument on ESA's SMART-1 mission. As a result of detailed developments to all aspects of the design, its performance as measured in the laboratory greatly surpasses that of D-CIXS. In comparison with SMART-1, Chandrayaan-1 is a science-oriented rather than a technology mission, leading to far more favourable conditions for science measurements. C1XS is designed to measure absolute and relative abundances of major rock-forming elements (principally Mg, Al, Si, Ca and Fe) in the lunar crust with spatial resolution ⩽25 FWHM km, and to achieve relative elemental abundances of better than 10%.
Original languageEnglish
Pages (from-to)717-724
Number of pages8
JournalPlanetary and Space Science
Issue number7
Early online date20 Feb 2009
Publication statusPublished - Jun 2009


  • Moon
  • Lunar composition
  • X-ray spectroscopy
  • Chandrayaan-1
  • Space instrumentation


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