Refracting Telescopes

I can explain the principle, if you want. Here is a picture] to understand.

The objective has a collecting lens, where the parallel light rays are refracting, so they hit each other in a common point, the focus (focal point). The distance between the collecting lense and the focus is the focal length. The same goes for the eyepiece lense too (it is a collecting lense as well). So both lenses have a common focal point, where the image can be observed. As the refracting telescope has a *long focal length, it is able to get images which have a long distance to this telescope (so called tele-focal point).*

Thank you, this helps a lot, although the link doesn't seem to be working.