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There are multiple telescopes there. Solar observatories need to track the sun, so they use a little mirror (heliostat) at the tunnel entrance that changes ang
by subcosmos 8y ago
There are multiple telescopes there.
Solar observatories need to track the sun, so they use a little mirror (heliostat) at the tunnel entrance that changes angle to track the sun, so you can point it anywhere.
http://www.astropixels.com/observatories/KPNO/KP80-127.html http://www.astropixels.com/observatories/KPNO/KP80-127.html