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To truly get a feel for the amazing accomplishment that was achieved with the launch of the Hubble telescope, spend some time on Nasa s web site dedicated to the project at hubble.nasa.gov. There are also another site where you can enjoy some stunning pictures from the Hubble at heritage.stsci.edu. It s hard to believe how long the Hubble has been orbiting earth and sending back amazing video and pictures of what it is discovering in space. Their input is a hundred times more reliable than what a sales brochure or that salesman might have to say because the telescope geeks have been where you are, made the mistakes and are eager to help you avoid those same mistakes. Size Matters In the world of telescopes, the sales people see, to try to baffle us with all the bells and whistles of their hottest selling model. - A binocular telescope uses a set of telescopes mounted and synchronized so your view of the sky is 3-D. Beyond the basic types, other terms refer to parts of the telescope or to the science behind how telescopes work. - Collimation is a term for how well tuned the telescope is to give you a good clear image of what you are looking at. But by far, the most talked about concept that has captured the imagination and the fears of science fiction fans and the general public is of another asteroid hitting the earth that could wipe out life as allegedly happened to the dinosaurs. In fact, the movie Armageddon was based on this idea and the concept that somehow mankind could avert that catastrophe with technology. In 2006, there was quite a bit of controversy as scholars and astronomers agreed to downgrade Pluto and remove its status as a planet. So you have to wonder, what is it that makes something a planet and what happened to Pluto? It didn t just go away so it must still be out there. A planet, by scientific definition is any object in orbit around a sun, that has formed into some kind of round object is a planet as long as it has cleared away any other orbiting items around it. It is pretty easy to see that the lens is the heart of the telescope so the kind that you will use will determine the success of your use of that telescope. The refractor lens is the simplest because it uses a convex lens to focus the light on the eyepiece. So the lens bends outwards for this purpose.
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