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折射望远镜[Refracting Telescope] [2005-9-30]
iamet 发表在 ¤〖天文〗
| | Refracting telescopes (called "refractors") were invented in 1609. They suffer from chromatic aberration and are no longer in widespread use at research observatories. However, as a result of their superiority to reflectors for visual planetary observation because of slower f-ratios and better optics, the amateur community uses refractors extensively. |
学好数理化，走遍天下都不怕！ | |
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