赤经圈
- 网络Right ascension circle;circle of right ascension;circle of latitude
赤经圈-
还推导了子午方向观测中由于过任一天体的赤经圈投影与子午面之间夹角的变化对量度坐标x测定值的影响，所有这些都是由于转轴观测和星象偏离芯片相对中心引起的。
The influence of the variation in the angle between the projection of the right ascension circle of an object and the meridian plane on the determined value of the measured coordinate x during the observation of the star carried out in the meridian direction is also derived .
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设定赤经&在校准好极点以后，观测者必须利用计算机或已经同步好恒星时的装置设置好赤经圈。
Setting Right Ascension-After polar alignment , the observer uses a calculator or a known star to synchronize the right ascension circle with Sidereal Time .