5. The 200-Inch Hale Telescope
| Autor: | Ira S. Bowen |
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| Rok vydání: | 1954 |
| Předmět: | |
| Zdroj: | Transactions of the International Astronomical Union. 8:750-754 |
| ISSN: | 0251-107X |
| DOI: | 10.1017/s0251107x00032806 |
| Popis: | One of the first problems investigated at the start of the 200-inch telescope project was that of a suitable site. Extensive tests of climatic and ‘seeing’ conditions at some dozens of sites in the semi-arid south-western part of the United States led to the selection of Palomar Mountain. This is a flat-topped mountain some 10 x 20 km. in extend located 150 km. south-east of Los Angeles. The altitude of the telescope is 1700 m. Temperature conditions are very stable with a diurnal range of about 6° C. and observing conditions during the past two years have proved to be at least as satisfactory as those at Mount Wilson. |
| Databáze: | OpenAIRE |
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