[evlatests] S-Band Sensitivity and Spillover
Rick Perley
rperley at nrao.edu
Wed Mar 24 13:33:37 EDT 2010
I have completed reduction of the S-band data taken last week.
The system temperatures, receiver temperatures, and efficiencies are
as reported earlier.
The spillover function is quite interesting, and rather different
than expected. The 'base level' spillover is about 10K, which applies
to elevations between 60 and 30 degrees. Above 60 degrees, the
spillover increases by about 2K by elevation 90. Below 30 degrees there
is a rapid rise in additional spillover, reaching 6 to 9 K (depending on
frequency) by elevation 11 degrees. Below that, the spillover is
approximately constant! This behavior is quite different than L-band.
Details will be shown tomorrow at the Test-Coord. meeting.
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