Reflector or refractor? Schmid Cassegrain or Maksutov? Take a look at the advantages and disadvantages of each of the individual design.
The refractor - these are lens telescopes in the classical style. This paragraph is about different types of telescopes and the respective advantages and disadvantages.
The Newton Reflector mirror telescope is a classic par excellence. The principle is simple but ingenious. Isaac Newton developed this telescope in 1668.
A very popular telescope system is the Schmid-Cassegrain optic. It offers a very short overall length and a long focal length.