我们需要一些特殊的器械，比如一个类似三脚架的东西以便照相机可以跟踪天体。
We will need a special device, which somehow looks like tripod and makes the camera follow the sky objects.
这张数码照片是用架在能跟踪天体的望远镜上的照相机拍的，于美国弗吉尼亚一露营基地。
The digital photograph was made with a camera mounted on a telescope tracking the stars through dark skies above a camp ground in Virginia, USA.
所以，虽然可以获得天体图像，但是在大多数观测中照相机的人们还不能了解照相机的全部能力。
So while it is possible to obtaincelestial images, the camera's full power cannot yet be realised for most observations.
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