  We describe the design and implementation of the University of Chicago
Infrared Camera 2 (UCIRC2) built for monitoring cloud coverage during the
EUSO-SPB2 flight (the second generation of the Extreme Universe Space
Observatory on a Super Pressure Balloon). UCIRC2 uses two infrared (IR) cameras
centered on 10$\mu$m and 12$\mu$m wavelengths to capture images of the clouds
beneath EUSO-SPB2 in two bands spanning the thermal emission peak. Taken every
minute, the IR images allow the determination of the height and coverage of
clouds between the telescope and the ground. We discuss the design and
construction of UCIRC2, including the techniques and design principles that
make the module temperature and vacuum resilient. Additionally, we delineate
the image reconstruction process and the pixel by pixel temperature calibration
procedure. This paper will posit design and implementation suggestions for
future ultra-high energy space telescopes.
