We have developed a near-infrared spectrometer designed to measure the absolute intensity of the Solar 854.2 nm CaII Fraunhofer line, scattered by interplanetary dust, in the Zodiacal light spectrum. Based on the known equivalent line width in the Solar spectrum, this measurement can derive the Zodiacal brightness, testing models of the Zodiacal light based on morphology that are used to determine the extragalactic background light in absolute photometry measurements. The spectrometer is based on a simple high-resolution tipped filter placed in front of a compact camera with wide-field refractive optics to provide the large optical throughput and high sensitivity required for rocket-borne observations. We discuss the instrument requirements for an accurate measurement of the absolute Zodiacal light brightness, the measured laboratory characterization, and the instrument performance in flight.
@article{arxiv.1307.0016,
title = {The Cosmic Infrared Background Experiment (CIBER): the Narrow Band Spectrometer},
author = {P. M. Korngut and T. Renbarger and T. Arai and J. Battle and J. Bock and S. W. Brown and A. Cooray and V Hristov and B. Keating and M. G. Kim and A. Lanz and D. H. Lee and L. R. Levenson and K. R. Lykke and P. Mason and T. Matsumoto and S. Matsuura and U. W. Nam and B. Shultz and A. W. Smith and I. Sullivan and K. Tsumura and T. Wada and M. Zemcov},
journal= {arXiv preprint arXiv:1307.0016},
year = {2015}
}