Big Dipper ζ — 北斗七星之开阳

该页面上的所有坐标都不是实际的藏宝点位置。This geocache is NOT located at the posted coordinates. 北斗是由天枢、天璇、天玑、天权、玉衡、开阳、瑶光七星组成的。古代中国人民把这七星联系起来想象成为古代舀酒的斗形。天枢、天璇、天玑、天权组成为斗身，古曰魁；玉衡、开阳、瑶光组成为斗柄，古曰杓。北斗星在不同的季节和夜晚不同的时间，出现于天空不同的方位，所以古人就根据初昏时斗柄所指的方向来决定季节：斗柄指东，天下皆春；斗柄指南，天下皆夏；斗柄指西，天下皆秋；斗柄指北，天下皆冬。北斗七星从斗身上端开始，到斗柄的末尾，按顺序依次命名为α、β、γ、δ、ε、ζ、η，中国古代天文学家分别把它们称作：天枢、天璇、天玑、天权、玉衡、开阳、瑶光。从“天璇”通过“天枢”向外延伸一条直线，大约延长5倍多些，就可见到一颗和北斗七星差不多亮的星星,就是北极星。因为北极星的位置是一直不变的，所以古人们一直依靠北极星来判定方向。The asterism of the Big Dipper lies within the constellation of Ursa Major.The Big Dipper (US) or Plough (UK) is an asterism consisting of the seven brightest stars of the constellation Ursa Major, six of them are of second magnitude and one, Megrez (δ), of third magnitude. Four define a "bowl" or "body" and three define a "handle" or "head". It is recognized as a distinct grouping in many cultures.The North Star (Polaris), the current northern pole star and the tip of the handle of the Little Dipper, can be located by extending an imaginary line from Merak (β) thr