Copyright:Martin Pugh
原文:
Follow the handle of the Big Dipper away from the dipper’s bowl until you get to the handle’s last bright star. Then, just slide your telescope a little south and west and you might find this stunning pair of interacting galaxies, the 51st entry in Charles Messier famous catalog. Perhaps the original spiral nebula, the large galaxy with well defined spiral structure is also cataloged as NGC 5194. Its spiral arms and dust lanes clearly sweep in front of its companion galaxy (right), NGC 5195. The pair are about 31 million light-years distant and officially lie within the angular boundaries of the small constellation Canes Venatici. Though M51 looks faint and fuzzy to the eye, deep images like this one can reveal striking colors and the faint tidal debris around the smaller galaxy
中文翻譯:
跟住大斗的把手返離開斗碗，直到你找到把手的最後一顆亮星。然後，只需輕輕向南和西移動你的望遠鏡，你可能會發現這對引人入勝的互動星系，正是查爾斯·梅西耶著名目錄中的第51個條目。這個大型星系也被編號為 NGC 5194，或許是最早的螺旋星雲，其清晰的螺旋結構以及塵埃帶顯然在伴星系（右邊）的前面。這對星系大約距離我們3100萬光年，官方上屬於小星座犬韋那的角度範圍之內。雖然 M51 用肉眼觀察時顯得微弱而模糊，但深度影像，如這幅作品，可以揭示出驚人的顏色和圍繞著小星系的微弱潮汐殘骸。
#大斗 #星系M51 #NGC5194 #天文探索 #互動星系 #犬韋那 #星空 #宇宙之美 #深空觀測
來源:NASA每日圖片
