这是6月13日新墨西哥南部所见，麦克·诺特的长离子尾扫过望远镜的视野，插图是负片。
Seen here on June 13th from southern New Mexico, this Comet McNaught's long ion tail sweeps across the telescopic field of view (a negative image is inset).
视野大到182度的两只眼睛合在一起形成了全方位视野，甚至在前方重叠，产生了像双筒望远镜一样的效果。
It is so large at 182 degrees that both eyes together offer all-round vision and even overlap at the front, creating an effect like binoculars.
开普勒望远镜的工作原理是监测其视野内成千上万个恒星的亮度的微小变化。
Kepler works by monitoring the thousands of stars in its field of view for tiny changes in brightness.
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