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Focal Plane Array

(array of receivers at the focus of a radio telescope)

A Focal Plane Array (FPA) is an array (e.g., a grid) of radio receivers at the focus of a Radio Telescope, i.e., at its Focal Plane. Bolometers may be used as the receivers.

With it, Radio images can be made, as a photographic plate or CCD at the focal plane of an Optical telescope does. Development of FPAs over the last few years has progressed from a few tens of pixels to thousands of pixels and promises to continue to be an area of dramatic improvement.


Referenced by:
Atacama Pathfinder Experiment (APEX)
Green Bank Telescope (GBT)
Westerbork Synthesis Radio Telescope (WSRT)