Precision of magnitude measurement caused by spectral filtering technology
光谱滤波技术对星等测量精度的影响
and the equivalent magnitude of the space target is derived.
首先,对太阳在大气层外辐射照度进行了计算,推导出空间目标的辐照度计算公式,计算了目标的等效视星等值。
The procedure used to find candidate variables is based on the selection of stars with light curves showing large dispersion as compared with other stars of similar magnitude.
所运用的搜索方法是计算其星等光变幅度是否大于其它同种亮度星的光变幅度,即若一颗星的光变幅度大于大多数正常的同种亮度星的相应的σ的一定倍数(>3σ),则认为该星是变星的最初候选者。
Application of real time comparison to measuring satellite magnitude and it s precision evaluating;
实时比对法用于卫星星等测量及其精度评估
Using the relationship,the satellite magnitude was obtained by the CCD gray value under the same conditions as integral time,attenuation slice,and so on.
在CCD线性范围内,根据恒星在CCD探测器成像的灰度值得到星等与CCD灰度值的对应关系,利用此关系,在相同的衰减片和相同的积分时间等探测条件下由探测卫星的灰度值计算得出了其星等,并给出了CCD应用在卫星星等测量中的优势及注意事项。
We also use two automatic data reduction programs Pipeline I and Pipeline Ⅱ to process observational data and calibrate the BATC magnitudes of the other stars in the observed sky region.
利用批处理程序PipelineI和PipelineⅡ对观测数据进行处理,并利用观测天区中标准星已知的BATC星等来确定天区内的其它恒星的BATC星等。
Color Refraction and Magnitude Equation of Photographic Astrometry for the 1m Reflector of CTIO;
CTIO 1m反射望远镜的色折射改正和星等差
Stars are classified by brilliance as of the first, sixth, etc. magnitude.
星就其光度而分，可分为一等星、六等星等等。
Upper Limit: The upper limit for the magnitude of reference stars.
最亮星等极限：参考星的最亮的星等。
observe(a star,etc)by using sights
（用仪器）观测（星等）.
The sun, moon, stars, etc. are celestial bodies.
太阳、月亮、星星等都是天体。
The sun, moon, planets, stars, etc. are heavenly bodies.
太阳、月亮、行星、恒星等是天体。
Method of Instrumented Magnitude Rectification Based on Star Sensor
基于恒星敏感器的仪器星等修正方法
The Color-Magnitude Relation of Late-Type Galaxies and their Disks
晚型旋涡星系及其盘的颜色星等关系
Some catalogs provide data on motions, variability, duplicity, etc.
有的星表还提供了运动，是否变光以及双星、聚星等等的资料。
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。
In the illustration above, the limiting magnitude has been set to8.
在下面的图例中，极限星等是8——最大可能视场等级的默认星等。
a star of the first, second, etc magnitude
一等星、 二等星.
The brightest stars are first-magnitude stars while those just visible to the human eyes are sixth-magnitude stars.
最亮的星球是一等星，那些肉眼刚能看见的星球算是六等星。
a communication satellite, link, etc
通讯卫星、 通讯线路等
You'll have to wait a good few weeks.
你必须等好几个星期。
Our sun is an average size star.
太阳是中等大小的恒星。
track a satellite, missile,etc using radar
用雷达追踪卫星、导弹等
Saturnian low-energy thermal plasmas
土星低能热等离子体
He has awaited your coming for a week.
他等你来已经一星期了。