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AS 14-67-9369 - Cold Cathode Ion Gauge and Suprathermal Ion Detector Experiment
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Original caption:"117:20:27 MT. This photo shows the Cold Cathode Ion Gauge (CCIG) and the Suprathermal Ion Detection Experiment (SIDE). The SIDE is the large box while the CCIG is the smaller instrument next to it. There is a great deal of dirt on the north face of the SIDE.
Because this face receives little direct sunlight, the dirt will have little effect on the internal temperature of the instrument.
Dirt on the East or West faces and on the top would increase the amount of sunlight that the instrument would absorb during the course of a Lunar Day and, therefore, would lead to a higher than optimal internal temperature".
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