  We analyze observations of the microwave sky made with the Python experiment
in its fifth year of operation at the Amundsen-Scott South Pole Station in
Antarctica. After modeling the noise and constructing a map, we extract the
cosmic signal from the data. We simultaneously estimate the angular power
spectrum in eight bands ranging from large (l ~ 40) to small (l ~ 260) angular
scales, with power detected in the first six bands. There is a significant rise
in the power spectrum from large to smaller (l ~ 200) scales, consistent with
that expected from acoustic oscillations in the early Universe. We compare this
Python V map to a map made from data taken in the third year of Python. Python
III observations were made at a frequency of 90 GHz and covered a subset of the
region of the sky covered by Python V observations, which were made at 40 GHz.
Good agreement is obtained both visually (with a filtered version of the map)
and via a likelihood ratio test.
