CIBER (The Cosmic Infrared Background Experiment) is a sounding rocket payload designed to
characterize the near infrared (IR) background light. CIBER is built by an international
collaboration of Universities and Government Laboratories which has flown twice and, having acquired a data set
which is not possible from other platforms, will soon shed new light on the nature of the Cosmos.
The Extragalactic Infrared Background (EBL) is the integrated light from all of the infrared
sources in the Universe. In the near IR, these photons are produced by stars are a by-product
of nucleosynthesis. Measurement of the near IR EBL therefore a constrains the stellar content
of the Universe.
CIBER is composed of three instruments, each with different science goals, but all measuring some aspect of the
near IR background.
The Imagers search for fluctuations arising in the near IR EBL from the first generation of stars and
galaxies in the Universe.
The Low Resolution Spectrometer measure the color of the near IR EBL, thereby constraining the stellar
content of the Cosmos.
The Narrow Band Spectrometer determines the brightness of the Zodiacal Light, which is
due to dust in the solar system reflecting the light from the sun.