celestial position circle 天文定位圆
circle of celestial latitude 黄纬圈
error circle of celestial fix 天文船位误差圆
This picture of the geocentric celestial event above the Arctic Circle was taken near midnight from northern Finland's Kaunispää Hill in Lapland.
这张照片记录下了在芬兰北部拉普兰德的Kaunispää山的北极圈的天空中将近午夜时分发生的以地球为中心的天文现象。
Its intersection with the celestial sphere will be a great circle -the ecliptic.
它与天球相交处形成一个大圆-黄道。
The errors of the circle of a meridian circle will immediately affect the precision in determining celestial bodies' declinations.
刻度盘的误差，是子午环固有的仪器误差之一，它直接影响了天体赤纬的测定精度。
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