2016 Scientific Ballooning Technologies Workshop Title Active Cooling of Reflecting Telescopes Author Andrei L. Korotkov (Brown University) Abstract The warm mirrors are a significant source of thermal photons. Reducing the thermal emission from the reflective optics is important for millimeter and sub-millimeter, and might be critical for near infrared observations. Passive radiative cooling with shielding the optics from the direct sun light and radiation from the ground is a standard technique for balloon-borne instruments. A possibility of further temperature reduction with using of cryocoolers is considered. The role of convective heat transfer and limitations associated with the ice condensation are discussed.
A possibility of further temperature reduction with using of. cryocoolers is considered. The role of convective heat transfer and limitations associated. with the ice ...
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Page 1 of 1. 2016 Scientific Ballooning Technologies Workshop. 2016balloontech.umn.edu. Abstract. Title. Author. Bolometer Readout (BRO) system for the EBEX2013 kilo-pixel array of transition-edge. sensors dissipated about 600 W by the 28 digital fre
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