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Dual band observations

In order to observe two frequencies simultaneously, the beam has to be split into two beams with the help of a dichroic. This adds some instrumental noise that we will encode as a higher value of the receiver noise (i.e., in increasing \bgroup\color{red}\ensuremath{T_\ensuremath{\mathrm{rec}}}\egroup by for instance 10K).

As the dichroic can be removed from the optical path when doing single band observations, this \bgroup\color{red}\ensuremath{T_\ensuremath{\mathrm{rec}}}\egroup increases will only happen when the sensitivity estimation is done in dual band mode.



Subsections

Gildas manager 2024-12-01