Reply to post: Just to add...

China can't find anyone smart enough to run its whizzbang $180m 1,640ft radio telescope

Anonymous Coward
Anonymous Coward

Just to add...

...although FAST has a 500m reflector, it is 'oversized' in the sense that it can't use the entire reflector when making observations; it has a maximum effective/usable aperture of between 200-300m, depending upon how far away from the zenith you want to observe.

According to the numbers on Wikipedia, it can observe up to 26.4 degrees from the zenith whilst maintaining an effective aperture of 300m and up to 60 degrees with an effective aperture of 200m.

(I'm a bit suspicious of wikipedia's upper limit of 60 degrees from the zenith - I'd previously heard that it was 40 degrees, and 60 degrees seems almost impractical for a fixed reflector).

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