UCIRC: Infrared Cloud Monitor for EUSO-SPB
August 16, 2017
August 03, 2018
Herein we describe the design and implementation of the University of Chicago Infrared Camera (UCIRC) built for monitoring cloud coverage during the EUSO-SPB flight (Extreme Universe Space Observatory on a Super Pressure Balloon). UCIRC uses 2 infrared (IR) cameras one with a bandpass filter centered on 10m and one on 12m wavelength, to capture images of the cloud cover under EUSO-SPB in two bands spanning the thermal emission peak. The IR images taken every minute allow the determination of the height, temperature, and density of clouds between the telescope and the ground. We discuss the design and construction of UCIRC, explicating in particular the techniques and design principles that helped make the module temperature and vacuum resilient. Additionally, we outline a pixel by pixel temperature calibration procedure. This paper posits design and implementation methods for cloud cover observation modules on future ultra-high energy space telescopes.
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