Fig. 9
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Top: measured receiver noise temperature (uncorrected) of the ASTROREC system using the Nanocosmos calibration system and assuming Tcold=17 K. Middle: measured receiver noise temperature of the ASTROREC system using the Nanocosmos calibration system and corrected using the effective noise temperature of the cold load. Bottom: calculated effective noise temperature of the cryogenic cold load of the Nanocosmos calibration system (see Sect. 3.4).
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