Top Telescope 2000
| Name | Out | In | aperture (m) | Area (m²) | Mirrors | Note | Altitude |
|---|---|---|---|---|---|---|---|
| Keck 1 & 2 | 10 m each | 76 m2 each | 36 x 1.8 m hexagons M1 mirrors each | largest twin telescopes, largest aperture mirrors, 152 m² total optical area | 4145 m | ||
| Hobby-Eberly Telescope (HET) | 9.2 (max.) | 66–45 m² | 92 x 1 m hexagon; 11 x 9.8 m mirror | Spherical M1 w/ fixed mirror; spectroscopy | 2030 m | ||
| Subaru Telescope | 8.2 | 53 m² | 1 x 8.3 m M1 | Largest single piece mirror (tied with the 4 VLT) | 4145 m | ||
| VLT 1,2,3, & 4 | 8.2 m each | 53 m² each | 1 x 8.2 m M1 | Largest quadruplet telescope; largest single piece mirrors (tied with Subaru) | 2635 m |
Read more about this topic: List Of Largest Optical Reflecting Telescopes
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“People think that at the top there isn’t much room. They tend to think of it as an Everest. My message is that there is tons of room at the top.”
—Margaret Thatcher (b. 1925)
“The sight of a planet through a telescope is worth all the course on astronomy; the shock of the electric spark in the elbow, outvalues all the theories; the taste of the nitrous oxide, the firing of an artificial volcano, are better than volumes of chemistry.”
—Ralph Waldo Emerson (1803–1882)
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