Word: moone
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Dates: during 1960-1969
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...pyrometer, which has already performed well on the 61-inch reflector telescope at Harvard's Agassiz Station, measures the temperature of a small area of the moon's surface at a time. On a map of the moon some five feet in diameter, this area is about the size of a postage stamp. As the pyrometer scans the moon from side to side and from top to bottom, the record of intensity maps the distribution of temperature over the whole disc of the moon...
...electrical resistance of the thermistor changes in response to tiny fluctuations in temperature. Special filters allow only a very narrow band of the infrared, between eight and 14 microns, to fall on the thermistor. The filter rejects the shorter infrared waves omitted by the sun and reflected by the moon. The earth's atmosphere, where water vapor, ozone and carbon dioxide absorb other portions of the infrared, also acts as a sort of filter. However, one can easily derive the temperature of the moon from the intensity of infrared radiation in the band transmitted between eight and 14 microns...
Attached to the pyrometer is a 35-millimeter camera accurately aligned to take pictures of the exact area of the moon's surface from which the thermistor is recording. As the pyrometer scans, the camera and the thermistor record alternately...
...moon's thermal profile will be compared with a conventional map of the moon to see of any correlation exists between the temperature variations and such surface features as mountains, "seas," and craters...
Russian astronomers have reported signs of volcanic activity on the moon, and Menzel hopes to arrange with Russian observatories to report immediately to the Cambridge Observatory any signs of volcanic activity so that the observation may be corroborated, using the Harvard pyrometer...