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2. Monterey Institute for Research in Astronomy - Wikipedia

   en.wikipedia.org/wiki/Monterey_Institute_for...

   In preparation for fire, the walls are filled with gravel; if the outer wall burns, then gravel will be released to smother the flames. [3] The observatory houses a computer-controlled 36 inch Cassegrain telescope equipped with Spectrographs, [12] one of two copies of the world's most precise astronomical polarimeter, HIPPI-2, [13] and direct ...

3. Segmented mirror - Wikipedia

   en.wikipedia.org/wiki/Segmented_mirror

   Also known as the GranTeCan, the Canaries Great Telescope uses a total of 36 segmented mirrors. [ 9 ] [ 10 ] With a primary mirror of 10.4 m (34 ft), it is currently the world's largest optical telescope, located at the Roque de los Muchachos Observatory on the island of La Palma , in the Canary Islands in Spain.

4. List of largest optical telescopes in the British Isles

   en.wikipedia.org/wiki/List_of_largest_optical...

   Armagh Observatory 15-inch Grubb reflecting telescope. [21] Specula metal mirror mounted on an equatorial, with clockwork-drive. [21] Bedford Observatory Tully 5.9 inch refractor (8.5 feet focal length); Dollond mount with Sheepshanks clockwork drive. [22] Cambridge Observatory 36 inch (3 feet = 91.44 cm) aperture reflector

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Jupiter, ascending: See our solar system’s biggest planet at ...

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   People around the world will have a chance this weekend to catch what could be the year’s most stunning view of the largest planet in our solar system.

7. List of largest optical reflecting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   There are only a few sites capable of polishing the mirrors for these telescopes. SAGEM in France polished the four VLT mirrors, the two Gemini mirrors, and the 36 segments for GTC. [18] The Steward Observatory Mirror Lab cast and polished the two LBT mirrors, the two Magellan mirrors, the MMT replacement mirror, and the LSST primary/tertiary ...