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This page describes an image 网罟座星图

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图示说明: 网罟座及其亮星与周围星座。网罟座被以下星座环绕(按顺时针方向):时钟座、水蛇座和剑鱼座。网罟座是一个南天星座,因此在南半球的某个时段可以看到整个星座。在北半球赤道的大部分区域也能完整观测到该星座,而在赤道地区的其他区域以及北半球部分温带地区则可以观测到该星座的部分。对于整个南极地区和南半球的大部分温带地区而言,网罟座是环绕极地的星座。该星座在北半球的冬季和南半球的夏季晚上观测最佳。

本图以北为上,以度为单位的赤纬表示纵轴;以东为左,以时为单位的赤经表示横轴。图中标注的恒星的大小与恒星的视星等有关,视星等是衡量恒星视亮度的标准,较大的点表示较亮的恒星。希腊字母标记了星座中最亮的恒星,通常按亮度排序,最亮的恒星标记为α,次亮者标记为β,以此类推,不过这种排序并不总是有效的。虚线标示出国际天文学联合会规定的星座边界,而绿色实线则表示常见的星座连线方式。然而,星座的边界线以及恒星之间的连线并不会出现在实际夜空中。


图示来源: 由国际天文学联合会天文教育办公室根据国际天文学联合会和《天空与望远镜》杂志的原文改编. 来源链接

图示翻译状态: 尚未由审核人员批准
图示译者: Li Jiankang
图示授权许可: 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标

相关术语表词条: 天球坐标 , 拱极星 , 星座 , 视星等 , 赤纬 , 赤经(RA)
分类: 肉眼天文学

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