3 May 1979 A Linear Scanning Balloon-Borne Telescope For Far-Infrared Astronomy
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A low-background balloon-borne far-infrared (30-300μ) telescope, utilizing a linear scan mode has dramatically increased the efficiency of mapping large extended areas over more conventional systems. The system consists of a 20 cm linear scanned mirror mounted as an off-axis (Herchelian) telescope designed to achieve an emissivity of 1% or less, a ten position cooled aperture-filter wheel, a cooled Pfund optical system with a composite diamond-germanium bolometer mounted in a spherical cavity, a minimum phase shift ultra-low frequency amplifier, and a 4 micron thick mylar dewar window. This system was used to produce detailed far-infrared maps of the galactic plane. The system specifications and operating parameters will be discussed and preliminary data shown.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Nishimura, T. Nishimura, F. J. Low, F. J. Low, R. F. Kurtz, R. F. Kurtz, } "A Linear Scanning Balloon-Borne Telescope For Far-Infrared Astronomy", Proc. SPIE 0172, Instrumentation in Astronomy III, (3 May 1979); doi: 10.1117/12.957079; https://doi.org/10.1117/12.957079

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