它拍摄了半边天和超过10亿个星系，通过超过10万亿像素的图像进行描绘。
Do you take a lot of pictures on your phone? Are you always running out of space for selfies orcat photos?
你用手机拍了很多照片吗？你总是没有足够的空间自拍或者拍猫猫的照片吗？
Well, in order to create a 10 trillion pixel image, you would have to stitch together 833,000 smartphone photos.
为了创建一个10万亿像素的图像，你必须把83.3万张智能手机照片拼接在一起。
Creating this map took more than 1,400 observing nights at three telescopes over the course ofsix years.
在六年的时间里，用三台望远镜观测了1400多个夜晚才绘制出这张地图。
Completely covering half the sky was a huge logistical challenge for the 200 researchersinvolved in the project.
完全覆盖半边天对参与该项目的200名研究人员来说是一个巨大的后勤挑战。
For the telescopes to take the best images possible, the team had to consider hours ofdarkness, weather, exposure time, the paths of planets and satellites, the moon's brightnessand location - the list goes on.
为了让望远镜拍到尽可能好的图像，小组成员必须考虑黑暗时间、天气、曝光时间、行星和卫星的路径、月球的亮度和位置等因素。
Even with all those variables factored in, there was still the matter of creating onehomogeneous image.
即使考虑到所有这些变量，仍然存在创建一个均匀图像的问题。
It's not as simple as just stitching them all together - the scientists needed a way to minimizedistortions caused by weather and atmospheric turbulence.
这并不是简单地把它们拼接在一起——科学家们需要一种方法来最小化天气和大气湍流造成的扭曲。
