This page describes an image 天壇座星圖
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Diagram caption: 天壇座及其位於中央的最亮的恆星，其周圍（按順時針方向）環繞著天蠍座、矩尺座、南三角座、天燕座、孔雀座、望遠鏡座和南冕座。天壇座是一個南天星座，在一年中的某個時間可以在整個南半球觀測到，而在赤道地區可以看到這個星座的部分，而北半球的一些溫帶地區也可以觀測到。天壇座在北半球的夏季和南半球的冬季的夜晚是最佳觀測時期。球狀星團 NGC 6352 和 NGC 6397 位於天壇座內，它們在圖中用黃色十字圈標出。疏散星團 NGC 6193 也位於天壇座內，並在圖中用黃色圓圈標示，但其最亮的成員星遮擋了該標記的部分，該恆星在良好的觀測條件下可以用肉眼看到。圖中標注的恆星的大小與恆星的視星等有關，視星等是衡量恆星視亮度的標準，，較大的點表示較亮的恆星。希臘字母標記了星座中最亮的恆星，通常按亮度排序，最亮的恆星標記為α，次亮者標記為β，以此類推，不過這種排序並不總是有效的。虛線標示出國際天文學聯合會規定的星座邊界，而綠色實線則表示常見的星座連線方式。然而，星座的邊界線以及恆星之間的連線並不會出現在實際夜空中。
Diagram credit: 由國際天文學聯合會天文教育辦公室根據國際天文學聯合會/《天空與望遠鏡》的原文改編. Credit Link
Diagram translation status: Not yet approved by a reviewer
Diagram translators: An automated transliteration from the simplified Chinese translation by - Li Jiankang
Diagram license: Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
Related glossary terms:
天球坐標
, 天蠍座
, 星座
, 球狀星團
, 疏散星團
, 視星等
, 赤經（RA）
, 赤緯
Categories:
Naked Eye Astronomy
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In Other Languages
英語: Ara Constellation Map義大利語: Mappa della Costellazione dell'Altare
簡體中文: 天坛座星图
德語: Altar-Sternkarte
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