What are different types of telescopes?
Telescopes and it’s types
A telescope is an optical instrument used to see distant objects clearly and magnified. The telescope was invented in 1608 by a Dutch optician Hans Lippershey. In 1609 the italian astronomer Galileo made his first telescope and observed the rings of saturn and jupiter’s moon. Today there are three main kinds of telescope: refracting telescopes, reflecting telescopes and radio telescopes.
1. Refracting telescopes:- A refracting telescope makes use of two lenses fitted at the end of tube. An astronomical telescope consists of one larger size convex objective lens and a convex eyepiece while a Galilean telescope makes use of a convex objective lens and a concave eyepiece.
2. Reflecting telescope:- A reflecting telescope is made of a concave mirror that gathers and focuses light waves. Another mirror near the point where waves come tiogher, reflects light into the eyepiece. A Newtonian telescope uses a mirror set at 45 angle to reflect the light into the eyepiece. A casegranian telescope has convex mirror which reflects light through a tiny hole in the center of the objective mirror.
3. Radio telescope:- A radio telescope has a huge reflector shaped like a bowl which reflects radiowaves to a detector. Radio telescope used in astronomy.