AC Photo Star Chart - AC Photo Star Chart
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...The largest chart that includes the faintest stars is the Palomar Photographic Atlas, which shows stars of magnitudes 20-21 north of declination -33°. There is also the AC Photographic Atlas, a joint effort of many observatories. Photographic atlases are generally accurate, but one of their weaknesses is that nearby faint stars are hidden by the blurring of bright stars. ... *Some of the terminology that refers to "AC Photographic Star Chart" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
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…もっとも暗い星を包含する最大の星図はパロマー写真星図で，赤緯－33゜以北の20～21等星がうつっている。そのほか，多くの天文台の共同作業であるAC写真星図がある。一般に写真星図は正確ではあるが，明るい星の光のにじみのために近傍の微光星が隠されるのは弱点といえる。… ※「AC 写真星図」について言及している用語解説の一部を掲載しています。 出典｜株式会社平凡社世界大百科事典 第２版について | 情報 |
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