It is very common for anybody to wish to have their own telescopes. The universe has always been something that we want to explore and know more about. This is why if you are given the chance to see what is up there in the sky; you will definitely not resist the opportunity. Telescopes are one of the simple tools you can use to know more about the universe. But do you know what popular types of telescopes are there?
The first catadioptric telescope made in 1930, which has both the fundamentals of reflectors and refractors, was designed by German astronomer Bernhard Schmidt. It then had a main mirror at the back end of the telescope along with a glass corrector plate on the other end of the telescope. The purpose of that design was to eliminate spherical aberration. If you look at the original version of the telescope, the photographic film could be found at the principal focus.
Schmidt-Cassegrain telescope, which was the most popular class of telescope way back then, is the offspring of the original version of the telescope. It was first created in the 1960s. The Schmidt-Cassegrain telescope was built with a secondary mirror that sends back light through an opening in the primary mirror to an eyepiece.
On the other hand, the second version of catadioptric telescope, which was designed by D. Maksutov comes with a more spherical corrector lens than what the Schmidt-Cassegrain telescope has. Apart from this, the styles are fairly similar. These are the designs which are more known as Maksutov -Cassegrain.
Newtonian Reflector Telescopes
The Newtonian reflector telescope is in a form of reflector. It is named after Sir Isaac Newton who actually created the main model. In this kind of telescope, a level mirror is positioned at a slant in the identical situation as the secondary mirror in a Cassegrain. This secondary mirror is the part of the telescope that concentrates the image into the eyepiece which is located in the side of the tube almost at the top most part of the scope.
So what are refractor and reflector telescopes? A refractor utilizes two lenses. At one end, you will find the larger optic, also known as the objective lens or object glass. On the other end is the lens which you peep in, the ocular or eyepiece. The larger optic is the one that collects light and turns it into a clear object.
On the other hand, in a reflector, luminosity is built up at the base of the scope by a concave mirror or the Primary. Several ways can be used to have the primary focus the light, and it is through this focusing that the mode of reflecting telescope is decided.
When you see the terms used to describe the parts of a telescope, you do not need to be overwhelmed. Telescopes in the market today come with user guides so that even ordinary people who know not so much about astronomy and how telescopes work can enjoy looking at the stars at night.