Astronomers describe star brightness in terms of magnitude and luminosity.
天文学家用星等和光度来描述恒星的亮度。
The magnitude scale now runs to more than six and less than one, even descending into negative Numbers - the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.
现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。
The magnitude scale now runs to more than six and less than one, even descending into negative Numbers -the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.
现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。
Its most noticeable star pattern is the Great Square of Pegasus: four second magnitude stars marking the body of the horse.
它最明显的图案是飞马座大四边形：即构成飞马躯体的四颗二等星。
This star is a red giant with a visual magnitude of 17.
这颗恒星是一颗红巨人与一个视觉幅度17。
The magnitude of a star is based on a scale more than 2,000 years old, devised by Greek astronomer Hipparchus in about 125 BC.
星等分类的方法沿用了超过2000年，由古希腊天文学家Hipparchus于公元前125年创立。
The magnitude of a star is based on a scale more than 2, 000 years old, devised by Greek astronomer Hipparchus in about 125 BC.
星等分类的方法沿用了超过2000年，由古希腊天文学家Hipparchus于公元前125年创立。
In Astrometry, the term is applied to the difference between the observed position (or magnitude) of a reference star and the position (or magnitude) listed in the star catalog.
在天文上，本术语指的是观测的参考星的位置(或星等)与星表上的该星的位置(或星等)的差值。
To set the magnitude of the faintest star which appears on the map, change the value in the Limiting magnitude field.
要设置星图上显示的最暗恒星的星等，就在极限星等区域更改数值。
To overcome this fault, concept of main star is introduced, and in the process of star field identification, information of star view magnitude is used.
为了克服这一缺点，引入主星的概念，并在星图识别过程中加入星等信息。
A star of the second magnitude at the end of the handle of the little dipper and almost at the north celestial pole.
北极星第二星的光度中的一颗星，位于小熊星座把柄的末端，几乎位于北天极。
Reference Stars: Star with known position and/or magnitude, that are used to find the plate constants and photometric calibration of an image.
参考星：已知位置和/或星等的恒星，用于确定图片的底片常数和光度校准。
Secondly, Star Trek I is orders-of-magnitude worse than Star Trek V.
首先来说，我们比较的是影片的品质而不是激烈程度。
Whereas Sputnik 3 looked like a star of the fifth magnitude, Luna 2 was like a star of the seventeenth magnitude.
然而人造宇宙站3看起来像第五大小的一个星一样，月神2像第十七大小的一个星。
The result illustrates that the noise error increases with the increase of the magnitude of the star.
分析结果表明，系统引入的噪声随着所观测恒星星等的增加而增加。
A star of the second magnitude, at the end of the hanDle of the Little Dipper and almost at the north celestial pole.
北极星第二星的光度中的一颗星，位于小熊星座把柄的末端，几乎位于北天极。
Estimates the magnitude sensitivity, magnitude valid range and probability of star capture based on signal detection and probability statistics.
以信号探测和概率统计为理论基础，对星等探测灵敏度、星等有效范围和星探测概率进行了分析与估算。
The "limiting magnitude" of stars on the map, ie the magnitude of the faintest star which will be displayed.
星图中的极限星等，即所显示的最暗星等。
In the illustration, the largest star symbol will be used for stars of magnitude 3 and brighter, so the entire range of star symbol will be used between magnitude 8 and magnitude 3.
在下面的图例中，最大的恒星符号代表3等及其以上的天体，因此可以在3- 8等之间使用全部恒星符号。
Vega is a bright star of magnitude 1 and can be seen from Spring to Autumn in most places.
织女星是一颗明亮的一等星并且从春季到秋季都能被看到。
We are daily faced with the miracle of life and the mystery of death, of the glory of flowering trees, the magnificence of the star-filled sky, the magnitude of mountains and of sea.
我们天天看见生命的奇迹、死亡的神秘、树木上似锦的繁花、布满星星夜空的绚灿、巍峨的群山和浩瀚的碧海。
We are daily faced with the miracle of life and the mystery of death, of the glory of flowering trees, the magnificence of the star-filled sky, the magnitude of mountains and of sea.
我们天天看见生命的奇迹、死亡的神秘、树木上似锦的繁花、布满星星夜空的绚灿、巍峨的群山和浩瀚的碧海。
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