The cosmic infrared background experiment (CIBER): The low resolution spectrometer

K. Tsumura, T. Arai, J. Battle, J. Bock, S. Brown, A. Cooray, V. Hristov, B. Keating, M. G. Kim, D. H. Lee, L. R. Levenson, K. Lykke, P. Mason, T. Matsumoto, S. Matsuura, K. Murata, U. W. Nam, T. Renbarger, A. Smith, I. SullivanK. Suzuki, T. Wada, M. Zemcov

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Absolute spectrophotometric measurements of diffuse radiation at 1 μm to 2 μm are crucial to our understanding of the radiative content of the universe from nucleosynthesis since the epoch of reionization, the composition and structure of the zodiacal dust cloud in our solar system, and the diffuse galactic light arising from starlight scattered by interstellar dust. The Low Resolution Spectrometer (LRS) on the rocket-borne Cosmic Infrared Background Experiment is a λ/Δλ ∼ 15-30 absolute spectrophotometer designed to make precision measurements of the absolute near-infrared sky brightness between 0.75 μm <λ < 2.1 μm. This paper presents the optical, mechanical, and electronic design of the LRS, as well as the ground testing, characterization, and calibration measurements undertaken before flight to verify its performance. The LRS is shown to work to specifications, achieving the necessary optical and sensitivity performance. We describe our understanding and control of sources of systematic error for absolute photometry of the near-infrared extragalactic background light.

Original languageEnglish
Article number33
JournalAstrophysical Journal, Supplement Series
Issue number2
Publication statusPublished - 2013 Aug


  • cosmic background radiation
  • infrared: diffuse background
  • instrumentation: spectrographs
  • methods: laboratory
  • space vehicles: instruments
  • techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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