광학 망원경 유형 -Optical Telescope Types

1. Refracting telescope
a) Achromatic telescope

The achromatic telescope is a refracting telescope that uses an achromatic lens to correct for chromatic aberration.

b) Aerial telescope
An aerial telescope is a type of very long focal length refracting telescope.

c) Galilean telescope
The design Galileo Galilei used in 1609. It used a convergent (plano-convex) objective lens and a divergent (plano-concave) eyepiece lens

d) Keplerian telescope
Invented by Johannes Kepler in 1611, is an improvement on Galileo's design. It uses a convex lens as the eyepiece instead of Galileo's concave one.

2. Reflecting telescope
a) Cassegrain reflector
combination of a primary concave mirror and a secondary convex mirror. This design puts the focal point at a convenient location behind the primary mirror and the convex secondary adds a telephoto effect creating a much longer focal length in a mechanically short system.

much longer focal length in a mechanically short system

b) Gregorian telescope
Designed by Scottish mathematician and astronomer James Gregory
c) The Newtonian telescope

invented by the English scientist Sir Isaac Newton (1642–1727) using a concave primary mirror and a flat diagonal secondary mirror.

Choosing the right telescope for your needs

Travel might be limited but with one of the best telescopes you can still gaze at the stars. We've always been fascinated by the heavens and the secrets they contain, so here's an opportunity to get up close.

I would suggest you start by enjoying visual astronomy through a easy to use and powerfull telescope. This way you can learn the night sky on your own, casually experience the joys of stargazing and spending time outside at darck night.

********What is the most important aspect of a telescope?**********

The aperture of a telescope is the most vital aspect of such an optical device. As we have explained earlier in the buying guide section, the wider the aperture, the more light rays it will be able to capture, and thus, it will produce a clearer and brighter image.


ENJOY OBSERVING NIGHT SKY