The time warp occurs because this image captured in a single frame a four hour exposure of the night sky. As a result, prominent star trails are visible.

发生时间弯曲是因为这张图是对夜空曝光4小时的单帧照片，结果可见显著的星迹。

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"In the classic way, all analemmas were made on single frames of film using multi-exposure Settings and placing a camera on a fixed platform," TWAN's Tafreshi said in an email.

按照经典的方式，所有8字曲线都是利用多次曝光设置和安置在固定平台上的相机拍摄的单幅画面制作而成。

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The sky in the exposures was de-rotated to compensate for the rotation of Earth, then images were stacked together producing an image identical to a single exposure but with less digital noise.

曝光的天空被旋转着以补偿地球的自转，然后把一连串的图像叠放在一起，产生了与单一曝光相同的图像，可是很少有数码噪声。

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Instead of trying to grab each frame in a single exposure, the scientist (unlike the entertainer) can wait as the data build up over time.

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In addition, the newly adopted Touch AE (Auto Exposure) function allows the user to set focus and exposure with a single touch on the subject displayed on the monitor.

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