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World's largest alien finder open to tourists for free in rural Guizhou [Copy link] 中文

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Post time 2017-3-17 03:43:56 |Display all floors
This post was edited by cmknight at 2017-3-17 03:44
GhostBuster Post time: 2017-3-14 21:05
Majority should not be misled. FAST is limited to good weather conditions. Hubble is in outer space. ...

Its frequency range is 70 MHz - 3.0 GHz. Optical telescopes are relegated to clear-sky weather conditions. Radio Telescopes have a much wider range of operational parameters. FAST only has a working aperture of 300 metres, not 500. Although the reflector diameter is 500 metres, only a circle of 300 m diameter is used (held in the correct parabolic shape and "illuminated" by the receiver) at any one time. It is parabolic, not spherical. The data it collects will be stored by the Next Generation Archive System (NGAS), developed by the International Center for Radio Astronomy (ICRAR) in Perth, Australia and the European Southern Observatory. There are still ongoing problems with the failure rate of the primary mirror actuators.

9,175 residents were relocated for this project, and more was spent on relocating them than on the actual construction of the telescope ($269 million vs. $180 million). There were forced demolitions and relocations, as well as unlawful detentions and substandard compensations.
It's hard to win an argument with a smart person. It's damned near impossible to win an argument with a stupid person.
Stupid people are like Glowsticks. You want to snap them in half and shake the crap out of them until they see the light.

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Post time 2017-3-18 19:30:48 |Display all floors
very nice

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