Reflecting+Telescopes

The first reflecting telescope was created by Sir Isac Newton. The full name of the reflecting telescope is the Newtonian reflector. The exact date The Newtonian reflector was created was in 1689. There are many advantages and disadvantages that the reflecting telescopes have when gazing at the heavens. A great advantage   that the reflector has is it collects alot of light because the surface area  the light that  is trapped by the telescope  much greater than the light that is trapped by  surface area of a refracting telescope. Another great advantage is these telescopes are easier to use when tracking objects in the night sky  A disadvantage of the reflecting telescope is that if dust or debris get in the telescope when you a gazing at he heavens the image becomes obstructed. Another disadvantage is the mirror in the telescope is very sensitive to temperature change. A few years later Laurent Cassegrain        re-constructed the  reflector and made it so the images would be crisper this telescope was called the Cassegrain reflector.





http://home.earthlink.net/~8-h-haggis/observing/fratio.gif http://cache.eb.com/eb/image?id=4630&rendTypeId=4[[user:nickd7|1208282506]