Atacama Pathfinder EXperiment APEX
Chajnantor atmospheric transmission
 
 
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Plot the transmission at the signal and image bands

The calculator plots the zenith atmospheric transmission on Llano de Chajnantor, for a specified frequency and with a range that covers both image bands (LSB and USB), assuming an IF frequency of 6 GHz..

This plot shows the PWV as function of month as measured by the ALMA radiometer.

 

Center frequency GHz
PWV value mm

 

Plot the transmission as function of frequency within a specified frequency range

 

The calculator plots the zenith atmospheric transmission on Llano de Chajnantor, for a specified frequency range (limits 200 to 1600 GHz) for up to 6 different PWV values.

This plot shows the PWV as function of month as measured by the ALMA radiometer.

 

Lower frequency GHz
Upper frequency GHz
PWVs:

 

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Last update : May 1, 2007