Copyright:El Cielo de Canarias
原文:
Inner planet Venus and a thin crescent Moon are never found far from the Sun in planet Earth’s skies. Taken near dawn on April 6, this timelapse composite shows them both rising just before the Sun. The mountaintop Teide Observatory domes on the fortunate island of Tenerife appear in silhouette against the twilight. In fact, the series of telephoto exposures follows the occultation of Venus by the Moon in three frames. Far from Earth in its orbit and in a nearly full phase, Venus was 96 percent illuminated. Near perigee or closest approach to Earth, the Moon’s slender crescent represents about 2 percent of the lunar disk in sunlight. Seen in the first two exposures, the brilliant morning star only vanishes in the third as it winks out behind the bright lunar limb. Five minutes of the dramatic occultation at dawn is compressed into 15 seconds in this timelapse video (vimeo).
中文翻譯:
在地球的天空中，內行星金星和細長的新月總是在太陽附近出現。於4月6日黎明拍攝的這組延時合成影像顯示，它們在太陽升起前不久一同升起。位於特內里費島的泰德天文台（Teide Observatory）頂部的圓頂在微光中輪廓清晰。事實上，這一系列的長焦曝光捕捉了金星被月亮掩食的三個畫面。因為金星在自己的軌道上距離地球較遠，並且幾乎是滿月相，因此金星的亮度約為96%。而在近地點或月球距離地球最近的時候，月亮的細長新月只有約2%的月面受到陽光照射。在前兩張曝光中，這顆璀璨的晨星仍然可見，而在第三張中，它在亮麗的月球邊緣後隱退。這五分鐘戲劇性的掩食事件，在這段15秒的延時視頻中被壓縮展示。
#金星 #新月 #掩食 #泰德天文台 #特內里費島 #天文觀察 #晨星 #宇宙之美 #天文現象 #延時攝影
來源:NASA每日圖片
