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Published online by Cambridge University Press: 14 August 2015
Observations of the infrared emission of the interplanetary dust enable a more direct analysis to be made of interplanetary dust material than is possible from observations of the scattered sunlight. A liquid nitrogen cooled photometer with Indium Antimonide detectors is described which has been developed for balloon-borne observations of the zodiacal light. The provision of both difference and absolute flux measurement modes will allow the observation of the zodiacal light, and the presumably much more intense emission of the high atmosphere, respectively.