At the time of construction in 1987 the WHT was the third largest single optical telescope in the world[note 1][3][4]; it remains the second largest in Europe[note 2].
Source: http://en.wikipedia.org/wiki/William_Herschel_Telescope
วันพฤหัสบดีที่ 22 กรกฎาคม พ.ศ. 2553
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The William Herschel Telescope (WHT) is a 4.20 m (165 in) optical/near-infrared reflecting telescope located at the Observatorio del Roque de los Muchachos on the island of La Palma in the Canary Islands. The telescope is part of the Isaac Newton Group of Telescopes, and is funded by research councils from the United Kingdom, Netherlands and Spain.
At the time of construction in 1987 the WHT was the third largest single optical telescope in the world[note 1][3][4]; it remains the second largest in Europe[note 2].
Source: http://en.wikipedia.org/wiki/William_Herschel_Telescope
At the time of construction in 1987 the WHT was the third largest single optical telescope in the world[note 1][3][4]; it remains the second largest in Europe[note 2].
Source: http://en.wikipedia.org/wiki/William_Herschel_Telescope
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