T h e t e l e s c o p e

It is an instrument that serves to collect light from a distant object and expand it. A telescope, in addition to the obvious advantage of larger objects, reveals poor lighting celestial bodies and therefore invisible to the naked eye, because its objective is able to detect more light than our eyes.

The discovery of the telescope is attributed, almost contemporaneously, by Dutchman Hans Lippershey and Galileo Galilei in 1609.

In general the rule applies that the larger the diameter of the objective (and therefore its surface), the greater the amount of light it captures. In addition, if the diameter of the objective of a telescope (which is usually defined more briefly opening of a telescope) depends on the resolving power of the instrument.

The first telescopes to consolidate throughout the seventeenth century were the Keplerian rate, which were built with focal lengths up to 30 or 40 m, in order to have a large number of increases. Provided notable flickering images and aberrations.

What is the function of the telescope?
Collect light from a distant object and expand it.
When was invented? In 1609
Who did it? Hans Lippershey and Galileo Galilei
What were the first telescopes consolidated? The Keplerian rate