There are two basic types of telescopes in the observatory in the garden, reflector and refractor and different ways to collect and focus light through the lens. The model will be discussed in this article, the reflector telescope. These telescopes use a series of small and large angled mirrors and reinforces the light of the stars and planets. It's hard to imagine that just use mirrors you will be able to see the rings of Saturn or pinwheels distant galaxies – but it works.
There are two basic designs of the reflector telescope – a Cassegrain and Newtonian. The Newton Sir Isaac Newton created the design for the first time, the renowned physicist of the 17th century. It concluded work on the optics, the lens of the period still suffering the dispersion of light color (known as chromatic aberration). In 1668 he built the first Newton telescope using a mirror as the objective to bypass the problem of chromatic aberration.
This design is very simple, and very popular with novice stargazers. There is usually at the bottom of a large mirror in the telescope, which focuses on the image of another flat mirror, which then forwards the image to the eyepieces, where you can zoom in.
The second type of the Cassegrain type. This design is used at the bottom of the concave primary mirror of the telescope mirror is a convex secondary against him at the top of the pipe. The light enters through the top of the telescope's primary mirror and is reflected in her small mirror. This mirror in turn sends the light back through a hole in the primary mirror to the eyepiece. This design is a bit more complicated and therefore more expensive, but they work very well.
Benefits reflector telescopes
The telescope reflector telescope and a good all-around several advantages over the refractor-type telescopes. The pro side, the design of the reflector telescope is slightly less complicated than a refractor telescope. This makes these telescopes is generally less expensive, at least at the lower end. It also allows more magnifying power in a compact design. The larger models to a higher value for the money than the refractor telescope. Fast focal ratio makes it an efficient reflector telescope for viewing very faint objects in deep space.
Disadvantages reflector telescopes
Although the telescope reflector telescope all-around good especially for amateur astronomers, this is not without some drawbacks. The setting of the mirror can be a bit delicate and transportation problems if not done very carefully. The medium-sized and larger versions of these telescopes are usually larger than the refractor models. The lower end models usually have a distorted image and a significant amount of maintenance involved cleaning and alignment of the mirrors.
Like any telescope, there are always advantages and disadvantages to consider when looking to buy. The reflector telescope efficient and easy to use so you get the best deal for amateur astronomers and star gazers. It is definitely worth considering in reflector telescope when researching which will be telescopes for you.