Optical telescopes use polished mirrors or glass lenses to focus observable light as it comes in through the hole. Telescopes use one or more curved optical components, normally made of glass lenses and mirrors, to collect light and other electromagnetic radiation and carry it to a focal point, allowing the image to be viewed, photographed, analysed, and sent to a device.Ī telescope is used in many non-astronomical instruments as well as in astronomy, including theodolites, spotting scopes, monoculars, binoculars, camera lenses, and spy glasses. Optical telescopes increase the observed angular size of distant objects along with their observed brightness.Īn optical telescope creates a magnified image for direct view, or to make a photograph, also for collecting data through electronic image sensors. Here, we will discuss optical telescopes and their types.Īn optical telescope converges and focuses light mostly from the visible part of the electromagnetic spectrum (while some work in the infrared and ultraviolet). Let's discuss the types of telescopes and their names.Īs we know there are different types of telescope available for different observations. In the twentieth century, new types of telescopes were discovered, including radio telescopes in the 1930s and infrared telescopes in the 1960s. Telescope now implies the diverse range of instruments that are capable of detecting various regions of the electromagnetic spectrum The reflecting telescope makes use of mirrors to collect and focus light. Kepler’s design inverts the image in general, it is much more than everything else. When Johannes Kepler, who was a German mathematician and astronomer working in Prague under Tycho Brahe, heard of Galileo’s discoveries, he perfected a more different kind of telescope. These early telescopes were a type of ‘opera glass,’ which produced erect or right side up images. With these powerful telescopes, he made observations in the Milky Way, of the mountains on the Moon, the phases of Venus, and the moons in the planet Jupiter. Galileo made sense of it in the early 1600s, and he made improvements in lens grinding that did increase the magnification from a relatively low value of two to as much as thirty. The patent was denied because of easy telescope duplication, and there was difficulty in the process of patent enforcement. The first mention of a telescope happens in a letter written in 1608, by Hans Lippershey, who was a Dutch spectacle maker in the process of seeking a patent for a telescope. Telescopes enable you to absorb and analyse radiation from astronomical phenomena, including those that are far apart in the cosmos.Įyeglass-makers had been experimenting with lenses before 1600. The telescope is the most important research tool in astronomy. The first practical telescopes were refracting telescopes with glass lenses, which Galileo discovered in the Netherlands at the beginning of the 17th century. It may also be used to observe distant objects using electromagnetic radiation emission, absorption, or reflection. A telescope is an optical device that observes distant objects using lenses, curved mirrors, or a combination of the two.
The first telescope's invention is a bit hazy. Telescope, is an instrument used to form magnified images of distant particles. The word ‘Telescope’ was coined by Giovanni Demisiani in 1611.
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