北斗七星是大熊星座的一部分【精品-doc】

北斗七星是大熊星座的一部分，形狀像一個盛水用的杓子。由於形狀十分完整，而且七顆星的亮度均勻，因此很容易在星空中找到它的位置。我們可以利用杓口約兩顆星、星距離延長五倍，即可找到北極星。要注意的是北極星本身不是一顆明亮的星星只是一顆二等星，而且它的高度隨著觀測緯度的不同而有變化。例如臺灣地區所見約北極星高度約25在北極，北極星則在天頂附近如右圖。仙后座形狀像一個字形或M字形，當北斗七星沒人地平線，我們可以利用它來尋找北極星。利用仙后座尋找北極星的方法是以A、B兩顆星的延長線與D、E兩顆星延長線得一交點F，F與C星距離延伸五倍處即可找到北極星。夏季大三角形是指天琴座的織女星、天鷹座的牛郎星及天鵝座的天津四所連成約三角形。我們可以利用這個三角形，以織女星、天津四為底邊，找到對應於牛郎星的北極星。由獵戶座腰帶的中間那顆星為起點，假想一條穿過獵戶頭部的直線，向上延伸即可找到北極星。春季大三角一元復始，萬象更新，春天正是一個充滿活力的季節，地上百花爭妍，而在夜空的舞台上，牧夫、室女、獅子、獵犬、大熊等星座，也紛紛上場了。牧夫座的大角星，室女座的角宿一，以及獅子座尾巴上的五常一即為春季大三角。夏季大三角在寂寥的夏夜裡，最今人心痛的，要算是訴說著淒美愛情故事的天琴座了。天琴座中有一顆潔白閃亮的一等星織女星，從織女星往西南方可以找到她朝思暮想在天鷹座上的牛郎星。天琴座的織女星，天鵝座尾巴上的天津四，以及牛郎星即為夏季大三角。秋季四邊形皓月當空，涼風徐徐的秋季，每到夜晚，夜空的舞台便反覆地上演英雄救美故事。連接象徵仙女座頭部的那顆星及象徵飛馬座翅膀約三顆星，就是秋季四邊形了。冬季三角形晴朗的冬夜，獵戶座是天空的守護神。只要走出戶外仰望天空，一定會看到斜列著約三顆星，以及環繞著的星群，這就是獵戶座。獵戶的後面，帶著二條獵狗，分別是人犬星座和小犬星座。大犬星座上最亮的星，是大名鼎鼎的天狼星，地也是夜空中光度最亮的一顆星。小犬星座上最亮的星是南河三，獵戶星座右肩是參宿四，連接南河三，參宿四和天狼星，就是冬季三角形。植物推測法1因植物有向光性，故向日葵的花及一般葉子，大都向著東方或東南方。2較粗的樹幹多略呈三角形，同南的一面呈扁平，同北的一面略顯尖角。3苔蘇類和羊齒類植物多生在陰溼的北方面。建築物推測法1廟宇多向南，教堂則是向東而建的。2汪意明顯的地標、橋樑、塔台等物，找出相關位置。月亮推測法首先要知道月形是上弦月、滿月，或是下弦月，觀測時間是幾點鐘，然後，找出從月形為起點的斜虛線，與觀測時間的橫線之交會點，此交會點直上所指的方位就是月亮所在的方位。以上的方法都相當概略而籠統，正確度並不高，是在完全沒辦法時可以一試的方法，豐富的經驗可以提高準確度。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