NASA的LRO探测器12月25日拍摄到嫦娥三号和玉兔 组图

NASA的LRO探测器于北京时间12月25日11时52分49秒，在离月面约150公里高度，拍摄到嫦娥三号着陆器和月球车“玉兔”，像素精度1.5米。着陆点精确位置44.1214°N，340.4884°E，位于一个直径约450米（深40米）的陨石坑以东约60米的地方。

The rover is only about 150 cm wide, yet it shows up in the NAC images for two reasons: the solar panels are very effective at reflecting light so the rover shows up as two bright pixels, and the Sun is setting thus the rover casts a distinct shadow (as does the lander). Since the rover is close to the size of a pixel, how can we be sure we are seeing the rover and not a comparably sized boulder? Fortuitously, the NAC acquired a "before" image (M1127248516R) of the landing site, with nearly identical lighting, on 30 June 2013. By comparing the before and after landing site images, the LROC team confirmed the position of the lander and rover, and derived accurate map coordinates for the lander (44.1214°N, 340.4884°E, -2640 meters elevation).

Chang'e 3 landed on Mare Imbrium (Sea of Rains) just east of a 450 m diameter impact crater on 14 December 2013. Soon after landing, a small rover named Yutu (or Jade Rabbit in English) was deployed and took its first tentative drive onto the airless regolith. At the time of the landing LRO's orbit was far from the landing site so images of the landing were not possible. Ten days later on 24 December, LRO approached the landing site, and LROC was able to acquire a series of six LROC Narrow Angle Camera (NAC) image pairs during the next 36 hours (19 orbits). The highest resolution image was possible when LRO was nearly overhead on 25 December 03:52:49 UT (24 December 22:52:49 EST). At this time LRO was at an altitude of ~150 km above the site, and the pixel size was 150 cm.

The lander set down about 60 meters east of the rim of a 450 meter diameter impact crater (40 meters deep) on a thick deposit of volcanic materials. A large scale wrinkle ridge (~100 km long, 10 km wide) cuts across the area and was formed as tectonic stress caused the volcanic layers to buckle and break along faults. Wrinkle ridges are common on the Moon, Mercury and Mars.

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• read this article, you will know what they are ! -stockmaster- ♂ (273 bytes) () 12/31/2013 postreply 08:04:37

• “在罗布泊搭个大摄影棚，什么东西都能“登月””作者: 博讯螺杆 -StockMaster- ♂ (175 bytes) () 12/31/2013 postreply 08:15:33

• 这种货色和777之类本质上是一样的。 -brotherbear- ♀ (0 bytes) () 12/31/2013 postreply 14:18:02

• 美国人登月是假，rover 登月是頁。 -analytical- ♂ (0 bytes) () 12/31/2013 postreply 10:59:25

• 回复：NASA的LRO探测器12月25日拍摄到嫦娥三号和玉兔 组图 -analytical- ♂ (0 bytes) () 12/31/2013 postreply 11:00:08