望远镜

Edited by Terence Dickinson, author of 14 books, including NightWatch and The Backyard Astronomer's Guide, a subscription to SkyNews ensures that you will stay abreast of the latest developments in the world of astronomy, enjoy expert advice on astronomy-related equipment, receive discounts to museums and space centres across North America and have a chance to WIN your very own Black Diamond ED80 telescope from Skywatcher, including a 2" 90 Dielectric Diagonal with 1.25" adapter and quality foam-lined metal carrying case.

由包括 《NightWatch》和《The Backyard Astronomer's Guide》等14本书的作者Terence Dickinson编辑本杂志。保证让你走在世界天文学的发展前沿，享受天文学专家咨询有关设备的建议。可以得到博物馆和北美空间中心商品目录并有机会赢取属于您自己的黑钻石ED80望远镜，其中包括2" 90 °角的介质1.25"适配器和泡沫内衬金属手提箱

Edited by Terence Dickinson, author of 14 books, including NightWatch and The Backyard Astronomer's Guide, a subscription to SkyNews ensures that you will stay abreast of the latest developments in the world of astronomy, enjoy expert advice on astronomy-related equipment, receive discounts to museums and space centres across North America and have a chance to WIN your very own Black Diamond ED80 telescope from Skywatcher, including a 2" 90o Dielectric Diagonal with 1.25" adapter and quality foam-lined metal carrying case.

由包括 《NightWatch》和《The Backyard Astronomer's Guide》等14本书的作者Terence Dickinson编辑本杂志。保证让你走在世界天文学的发展前沿，享受天文学专家咨询有关设备的建议。可以得到博物馆和北美空间中心商品目录并有机会赢取属于您自己的黑钻石ED80望远镜，其中包括2" 90 °角的介质1.25"适配器和泡沫内衬金属手提箱

"This is strikingly similar to the comet Shoemaker Levy 9 that impacted Jupiter in July 1994", said team member Keith Noll of

"这与苏梅克——列维9号1994年与木星相撞真是惊人的相似"，太空望远镜科学研究所的小组成员基斯·诺尔说。

Development of a space soft X-ray and EUV normal incidence telescope .

空间软X射线/极紫外波段正入射望远镜研究。

Based on the third-order aberration theory of two-mirror reflecting system, the influence of the geometrical aberrations on the performance of normal incidence telescopes was analyzed.

基于三级象差理论，分析了几何象差对正入射望远镜性能的影响，总结了弥散斑角宽度θ随着系统f数和半视场角uP的变化趋势。

It is said that recently US soldiers, fighting in Iraq, were eager to capture NVA DF binoculars which were still abundant among Iraqi's troops.

这一段实际是说，在伊拉克作战美军士兵很渴望能缴获伊军装备的D.F7x40望远镜。

It is no surprise to find the NVA DF at the end of this competition. It is only single-coated, and its light transmission is specified as 75%, whereas a modern binocular like the Swarovski Habicht can pass between 90% and 95% of the incident light.

NVA DF排在最后并不令人惊讶，它是单层镀膜，它的透光率标注是75%，而现代望远镜如Habicht能通过入射光的90%——95%。

The object glass of a telescope must be accurately centred.

望远镜的物镜必须精确置于中心上。

In this paper, we used the object and eyepiece lens of refracting telescope for instance, at first we conferred the optical system design analyze, and emended the and try to get better optical quality.

本论文以折射式望远镜的物镜及目镜为例，首先探讨光学系统，并修正镜片的设计分析，尝试得到较佳的光学品质。

A mirror, lens, or combination of lenses used to gather light and direct it upon an object or through a projection lens .

透镜含一个或多个透镜，用于辅助视力的一种工具，如单片眼镜或小望远镜

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。