The objective lens takes incoming light rays from a distant source. .

物镜从远处接收入射光线。

Here’s how it works: The objective lens takes incoming light rays from a distant source.

它的工作原理是这样的：物镜从远处接收入射光线。

The objective lens then converges the light rays to form a real, flipped image inside the telescope.

然后物镜会聚 光线，在望远镜内部形真实的翻转图像。

After all of the like terms cancel out, you’re left with a magnification equation in terms of the focal lengths of the objective lens and the eyepiece.

在抵消所有后，您将得到关于物镜和目镜焦距的放大方程。

While Galileo used a concave lens for his eyepiece, the standard refracting telescope uses a convex, converging lens for both the objective lens and the eyepiece.

伽利略的目镜使用凹透镜，而标准折射望远镜的物镜和目镜都使用凸透镜。

After all of the like terms cancel out, you're left with a magnification equation in terms of the focal lengths of the objective lens and the eyepiece. .

在所有的抵消之后，就物镜和目镜的焦距而言，您会得到 放大倍率方程。

The object is placed just beyond the focal point of the objective lens, so light rays again form a flipped real image on the other side.

多。 物体被放置 在物镜焦点之外，因此光线再次 在另侧形翻转的实像。

The original subtended angle is the subtended angle of the unaided eye – the angle between the center of the objective lens and the height of the real image.

原对角是肉眼的对角——物镜中心与实像高度的夹角。

It consisted of an objective lens on the end closest to the object and an eyepiece at the other end, which magnified the image produced by the objective lens.

它由最靠近物体端的物镜和另端的目镜组，它放大了物镜产生的图像。

And in a ray diagram, you can see that the tangent of the first angle, theta, is the height of the real image over the focal length of the objective lens.

在射线图中，您可以看到 第角度的切线 theta 是真实图像 在物镜焦距上的高度。

Many, like the Hubble Space Telescope, are reflecting telescopes, using mirrors as the objective lens so that they can have huge openings, taking in as much light as possible in order to best capture images of distant objects.

许多，如哈勃太空望远镜， 都是反射望远镜， 使用镜子作为物镜， 这样它们就可以有巨大的开口，吸收尽可能多的光线， 以便最好地捕捉远处物体的图像。