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Results tagged with telescope
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user 559
Questions related to the physical instruments for astronomical observations.
5
votes
How can we focus radio telescopes on a star when the earth is spinning?
Long before a star/source/etc falls below the horizon for one telescope, another telescope further west has already pointed at it, and is receiving the same signal. … Once this switchover has occurred, the previous telescope is free to select another target - something else on the other side of the planet that will be falling below the horizon for telescope further …
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