火星近冲日
(原标题: Stereo Mars near Opposition)
2022-12-03
浏览次数: 14
11月下旬从地球新加坡的屋顶望远镜拍摄的这两张火星照片看起来很清晰。当时，火星距离新加坡约8200万公里，并于12月8日接近地球天空中的太阳冲日点。奥林匹斯山是塔尔西斯山地区最大的火山（也是太阳系已知最大的火山），靠近火星的西翼。在这两幅图像中，它都是右上方的白色甜甜圈形状。中心附近可见的黑暗区域是Terra Sirenum区域，而最靠近行星东部边缘的长而暗的半岛是Gomer窦。在它的顶端附近是盖尔陨石坑，好奇号火星车在2012年的着陆点。在戈默窦上方，白色的斑点是极乐世界地区的其他火山。在地球的顶端是覆盖着冰和云的北极帽。这两张火星半球的照片相隔两天拍摄，形成了一对立体图像。看着画面的中心，交叉你的眼睛，直到分开的图像聚集在一起，看到红色星球的3D。
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Mars looks sharp in these two rooftop telescope views captured in late November from Singapore, planet Earth. At the time, Mars was about 82 million kilometers from Singapore and approaching its opposition, opposite the Sun in planet Earth's sky on December 8. Olympus Mons, largest of the volcanoes in the Tharsis Montes region (and largest known volcano in the Solar System), is near Mars' western limb. In both images it's the whitish donut-shape at the upper right. The dark area visible near center is the Terra Sirenum region while the long dark peninsula closest to the planet's eastern limb is Sinus Gomer. Near its tip is Gale crater, the Curiosity rover's landing site in 2012. Above Sinus Gomer, white spots are other volcanoes in the Elysium region. At the top of the planet is the north polar cap covered with ice and clouds. Taken about two days apart, these images of the same martian hemisphere form a stereo pair. Look at the center of the frame and cross your eyes until the separate images come together to see the Red Planet in 3D.
© Marco Lorenzi