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

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：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.

然后会聚 光线，在望远内部形一个真实的翻转图像。

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.

在抵消所有类似项后，您将得到一个关于和目焦距的放大方程。

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.

伽利略的目使用凹透，而标准折射望远的和目都使用凸透。

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. .

在所有类似的项抵消之后，就和目的焦距而言，您会得到 一个放大倍率方程。

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。 体被放置 在焦点之外，因此光线再次 在另一侧形翻转的实像。

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——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.

它由最靠近体一端的和另一端的目组，它放大了产生的图像。

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 第一个角度的切线 theta 是真实图像 在焦距上的高度。

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， 都是反射望远， 使用子作为， 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体的图像。