Why Are Most Large Telescopes Reflectors, Not Refractors

Why Are Most Large Telescopes Reflectors, Not Refractors?

In astronomy, a telescope is a device that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first practical telescopes were invented in the Netherlands at the beginning of the 17th century. They found use in both terrestrial applications and astronomy. A reflecting telescope uses an arrangement of […]

telescope cool down

Why Do Telescopes Need To Cool Down?

Humans have used the stars for navigation, divination, and religious practices for hundreds of years. Studying the stars and the planets also helped establish civilizations and pave the way for astronomy, not to mention astrology. With the invention of the telescope, studying heavenly bodies became more convenient, particularly with the integration of technological advances that […]