Brief description
Use a yagi antenna, pointing at the zenith, to determine the brightness
temperature of the Galaxy at 408 MHz. This experiment can be carried
out in the daytime. Power from the antenna is detected in a radio
receiver (ICOM IC-R7100) and recorded on computer or on a chart
recorder. Power variations over the day are calibrated from a `cold
load' (resistor in liquid nitrogen) to determine the absolute power
received. The equipment will enable you to make a drift scan of
the Galaxy and reenact the observations that were the birth of radio
astronomy.
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