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Developer Documentation |
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SUMMARY: fields | routine DETAILS: routine | ||||||||||
./toolbox get_ap_eff.pro
get_ap_eff |
Function to return a default aperture efficiency, given an observing frequency. Used in the calibration routines. The formula comes from the Ruze equation, using a surface accuracy of 390 microns. Currently the aperture efficiency returned is independent of elevation. For observations at low elevations it is especially important for the observer to bypass the default value returned by this routine.
apeff = get_ap_eff(18.5) print,apeff
Parameters | |
freq |
Observing frequency in GHz |
elev |
Observing elevation in degrees; currently not used. |