这幅由NASA的火星轨道探测器上的高解析度成像科学实验照相机（HiRISE）拍摄的图像涵盖了火星上希腊平原西北四分之一的一小部分。

This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter covers a small portion of the northwest quadrant of Hellas Planitia on Mars.

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本文提出了三片型后光阑照相物镜的一种解析设计方法。

In this paper, an analytic design method of Cooke triplet lenses with the back stop is described.

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