6 July 2018 Integration and instrument characterization of the cosmic infrared background experiment 2 (CIBER-2)
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Abstract
The extragalactic background light (EBL) is the integrated emission from all objects outside of the Milky Way galaxy. Imprinted by the history of stellar emission, the EBL in the near infrared traces light back to the birth of the first stars in the Universe and can allow tight constraints on structure formation models. Recent studies using data from the Spitzer Space Telescope and the first Cosmic Infrared Background ExpeRiment (CIBER-1) find that there are excess fluctuations in the EBL on large scales which have been attributed to either high redshift galaxies and quasars, or to stars that were stripped from their host galaxies during merging events. To help disentangle these two models, multi-wavelength data can be used to trace their distinctive spectral features. Following the success of CIBER-1, CIBER-2 is designed to identify the sources of the EBL excess fluctuations using data in six wavebands covering the optical and near infrared. The experiment consists of a cryogenic payload and is scheduled to launch four times on a recoverable sounding rocket. CIBER-2 has a 28.5 cm telescope coupled with an optics system to obtain wide-field images in six broad spectral bands between 0.5 and 2.5 μm simultaneously. The experiment uses 2048 × 2048 HAWAII-2RG detector arrays and a cryogenic star tracker. A prototype of the cryogenic star tracker is under construction for a separate launch to verify its performance and star tracking algorithm. The mechanical, optical, and electrical components of the CIBER-2 experiment will have been integrated into the payload by mid-2018. Here we present the final design of CIBER-2 and our team’s instrument characterization efforts. The design and analysis of the optical focus tests will be discussed. We also report on the performance of CIBER-2 support systems, including the cooling mechanisms and deployable components. Finally, we outline the remaining tasks required to prepare the payload for launch.
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Chi H. Nguyen, Chi H. Nguyen, Benjamin Stewart, Benjamin Stewart, Seung-Cheol Bang, Seung-Cheol Bang, James Bock, James Bock, Asantha Cooray, Asantha Cooray, Kenta Danbayashi, Kenta Danbayashi, Ambar DeSantiago, Ambar DeSantiago, Viktor Hristov, Viktor Hristov, Tomoya Kojima, Tomoya Kojima, Phillip Korngut, Phillip Korngut, Kevin Kruse, Kevin Kruse, Alicia Lanz, Alicia Lanz, Dae-Hee Lee, Dae-Hee Lee, Lunjun Liu, Lunjun Liu, Jared Loewenthal, Jared Loewenthal, Peter Mason, Peter Mason, Toshio Matsumoto, Toshio Matsumoto, Shuji Matsuura, Shuji Matsuura, Ryo Ohta, Ryo Ohta, Christian Pape, Christian Pape, Won-Kee Park, Won-Kee Park, Dorin Patru, Dorin Patru, James Parkus, James Parkus, Kei Sano, Kei Sano, Aoi Takahashi, Aoi Takahashi, Mark Peryer, Mark Peryer, Kohji Takimoto, Kohji Takimoto, Kohji Tsumura, Kohji Tsumura, Takehiko Wada, Takehiko Wada, Shiang-Yu Wang, Shiang-Yu Wang, Yasuhiro Yamada, Yasuhiro Yamada, Michael Zemcov, Michael Zemcov, } "Integration and instrument characterization of the cosmic infrared background experiment 2 (CIBER-2)", Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106984J (6 July 2018); doi: 10.1117/12.2311595; https://doi.org/10.1117/12.2311595
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