您要查找的是不是：
- northern reference star 北天参考星
- Any reference star that if found to show larger residual in either Right Ascension or Declination will be rejected from the astrometric solution. 任何一个参考星的赤经或赤纬偏差超过这个值将被拒绝进行天文测量处理。
- Astrometric Limit: The maximum residual in the place of a reference star, specified in arc seconds. 天文测量误差极限：参考星位置对应的最大误差，用角秒表示。
- 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。
- 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。
- The calculation becomes more accurate if more reference stars are used. 利用的定标星越多，计算的精确度就越高。
- 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。
- In this section, you can set a limit to the astrometric and photometric residuals of the reference stars. 在这里，你可以设置一个有关参考星的天文测量和光度测量的误差值。
- Moss affects the northern slopes. 朝北的山坡易生苔。
- In the routine photographic astrometry, the position determination of faint celestial body is realized by using multi-step transition of reference stars. 在常规照相天体测量工作中，对暗天体的定位是采用逐级定标星过渡的方法实现的。
- I'm the star in the northern sky. 我是北极星空的一颗明星。
- He heads up the operation in northern Europe. 在北欧他领导企业的业务活动。
- A native of India, especially northern India. 印度人尤指居住在印度北部的原居民
- Gazed with wonder at the northern lights. 惊奇地注视着北方的天光
- This reference book is very useful to our study. 这本参考书对我们的研究很有用。
- Many doctors were flown up to flooded northern areas. 许多医生由飞机进往遭受水灾的北方地区。
- Is this reference book of any use to me? 这本参考书对我有用处吗？
- I like to have my reference book within my reach. 我喜欢把参考书放在随手拿得到的地方。
- The Confederacy was defeated by the northern states. 南部邦联被北方打败了。
- Tony used no reference books in class. 托尼上课时不使用参考书。
