Published December 13, 2020 | Version Published + Presentation
Book Section - Chapter Open

Pre-flight optical test and calibration for the Cosmic Infrared Background ExpeRiment 2 (CIBER-2)

Abstract

The total integrated emission from galaxies, known as the Extragalactic Background Light (EBL), is an important observable for understanding the history of star formation over the history of the universe. Spatial fluctuations in the infrared EBL as measured by the Cosmic Infrared Background ExpeRiment (CIBER), Spitzer and AKARI exceed the predicted signal from galaxy clustering alone. The CIBER-2 project seeks to extend CIBER observa- tions of the EBL throughout the near infrared into the optical, through measurements above Earth's atmosphere during a suborbital sounding rocket flight. The experiment has a LN2-cooled 28.5 cm Cassegrain telescope along with three optical paths and dichroic beamsplitters, which are used to obtain three wide-field images in six broad spectral bands between 0.5-2.0 μm. The three focal planes also contain linear variable filters (LVFs) which simultaneously take spectra with resolution R=20 across the same range. CIBER-2 is scheduled to y multiple times on a Black Brant IX sounding rocket from White Sands Missile Range in the New Mexico desert. For the first flight, scheduled for early 2021, we have completed a variety of pre-flight optical tests, which we use to make focus adjustments, spectral response measurements, and absolute photometric calibrations. In this paper, we describe the methods behind these tests and present their results for pre-flight performance evaluation. In particular, we present measurements of the PSF for each broad spectral band, along with absolute calibration factors for each band and the LVF. Through monochromator scans, we also measure the spectral responsivity of each LVF as a function of position.

Additional Information

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). CIBER-2 was supported by NASA APRA research grants NNX07AI54G, NNG05WC18G, NNX07AG43G, NNX07AJ24G, and NNX10AE12G. Japanese participation was supported by KAKENHI (2034, 18204018, 19540250, 21340047, 21111004, and 15H05744) from Japan Society for the Promotion of Science (JSPS) and the Ministry of Education, Culture, Sports, Science and Technology (MEXT). Korean participation was supported by the Pioneer Project from Korea Astronomy and Space Science Institute (KASI). C.H.N was supported by NASA Headquarters under the NASA Earth and Space Science Fellowship Program - Grant 80NSSCK0706. We would like to thank the NASA Wallops Flight Facility engineers and staff for their technical supports.

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Additional details

Identifiers

Eprint ID
107200
Resolver ID
CaltechAUTHORS:20201218-104112646

Funding

NASA
NNX07AI54G
NASA
NNG05WC18G
NASA
NNX07AG43G
NASA
NNX07AJ24G
NASA
NNX10AE12G
Japan Society for the Promotion of Science (JSPS)
2034
Japan Society for the Promotion of Science (JSPS)
18204018
Japan Society for the Promotion of Science (JSPS)
19540250
Japan Society for the Promotion of Science (JSPS)
21340047
Japan Society for the Promotion of Science (JSPS)
21111004
Japan Society for the Promotion of Science (JSPS)
15H05744
Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Korea Astronomy and Space Science Institute (KASI)
NASA Earth and Space Science Fellowship
80NSSCK0706

Dates

Created
2020-12-18
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Astronomy Department , Physics Department
Series Name
Proceedings of SPIE
Series Volume or Issue Number
11443