![]() Reflector telescopes basically use a combination of mirrors and lenses. Later, more advanced designs such as Cassegrain, Coude and Nasmyth came out. The Newtonian reflector is the most famous type of telescope among amateur, and most of the professional astronomers. He built the first reflector telescope in 1668 which later became known as the Newtonian telescope. ![]() The credit for the first reflector telescope goes to the great Isaac Newton. Later it came to be known as the Gregorian telescope. The main problems involving refractor telescopes are the difficulty to build large lenses and chromatic aberration.Īlthough, the idea of using mirrors instead of lenses runs back to the time of Galileo himself, the reflection telescope was first scientifically proposed by James Gregory in 1663. Focusing to a distant object is done by varying the distance between these two lenses. the one closer to the ‘eye’) are setup in such a way that their optical axes coincides. the one that is closer to the ‘object’) and one with a very small focal length as the eyepiece (i.e. One with a very large focal length as the objective lens (i.e. ![]() In the telescope, the two media are air and glass. Refraction is defined as the process of change of direction of a wave when it passes through the interface of two media. The whole process of magnification is done using refraction. Refractor telescopes use only lenses in its design. The first astronomical telescope was built in 1608 by non-other than the great scientist Galileo Galilei. Although it is unclear exactly when he invented it, it appears as a scientific device on 1608. It was first manufactured by Hans Lippershey, a German-Dutch lens maker who built it as a toy. Refractor was the first kind of telescope to be made. In this article, we’re going to discuss the origin and the basic operation of reflector and refractor telescopes, and their differences. These are mainly optical devices, which use visible light to produce images of distant objects, such as planets, stars, nebulae and galaxies. ![]() They are also known as reflection telescopes and refraction telescopes. Reflector and refractor are basically the main two types of telescopes mostly used in astronomy. Refractor vs Reflector Telescopes | Refraction vs Reflection Telescopes ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |