1. Hans Lippershey (1608)
This telescope consisted of two parts: a concave mirror and an eyepiece. The concave mirror, made of brass, had a hole in the center to hold the eyepiece in place. This device made it possible for people to see things that were otherwise invisible to them for the first time.
2. Galileo Galilei Telescope(1609)
The first constructed telescope was a simple reflecting telescope with an objective lens made of polished brass and etched with a crosshatch pattern. The eyepiece lens was also made of brass and etched with a crosshatch pattern.
3. Niccolo Zucchi (1616)
This compound telescope consisted of two lenses: a convex lens and a concave lens. The objective lens had an aperture of 2 inches (5 cm) and was made of silver.
4. Christoph Scheiner (1630)
The invention of the first reflecting telescope. This device was the first of its kind that could make observations of the Moon and Mars.
5. Christiaan Huygens (1650’s)
The invention of the first compound microscope by Dutch engineers and scientists along with Christoph Scheiner, the telescope made some of the first observations of Saturn’s rings.
6.James Gregory (1663)
The invention of the first reflecting telescope, Its objective lens was made of polished silver, and the eyepiece was a simple concave mirror.
7. Sir Isaac Newton (1668 )
He invented the reflecting telescope, which was a step forward from the telescopes of Galileo Galilei. Widely known as the greatest physicist of all time, he is also known for his work in astronomy and optics.
8. Laurent Cassegrain (1672 )
He was a French physicist who invented the first refracting telescope, which could only reflect light.
9. John Hadley (1721 )
This telescope was constructed by the English astronomer John Hadley. It is the first telescope ever built and was used to make detailed observations of the Moon, Sun, and stars.
10. Chester Hall( 1733)
It was the first telescope to be built with a concave mirror, which allowed light from distant objects to be focused into a bright point of light.
11. William Herschel (1789)
He invented the biggest and most advanced telescopes in history, which were capable of making discoveries in the far reaches of the universe.
12. Alvan Clark (1895 )
This telescope was invented to detect and measure the composition of stars. By using this telescope, the astronomer discovered that the Sun had a companion star.
13. George Willis Ritchey and Henri Chretien (1910’s)
They improved the Ritchey-Chretien telescope by adding a corrector lens. This improved the telescope’s resolution and provided clear images of the planets and stars.
14. Hooker telescope (1917)
The telescope is the most advanced in history, and it has helped astronomers to make many discoveries.
15. Edwin Hubble (1924)
Edwin Hubble discovered the existence of galaxies, which were previously unknown to science. The Hubble telescope is a space telescope used to observe other galaxies.
16. John Dobson (1950’s)
The invention of the Dobsonian-style telescope greatly improved the use of a telescope. This helped to make the observations easier and more accurate.
17. Alatazimuth Telescope (1965)
This 238 Inch Large Russian telescope was the largest in 1965. This telescope was used to observe asteroids, comets, and other planets.
18. The Hubble Telescope (1990)
Built by the American astronomer Edwin Hubble and was launched into space, It is the most famous telescope in history. It is credited with greatly advancing our understanding of the universe.
19. The Large Binocular Telescope (2005)
This is the largest single-unit telescope globally and was built by the United States government for the National Optical Astronomy Observatory.
20. The South African Large Telescope) (2005)
This is one of the largest optical telescopes globally and was built by a team of international scientists led by the South African government.
21. The Giant Magellan Telescope (2020)
This is a planned large optical telescope constructed in Chile and the largest single-unit telescope in the world
22. James Webb Space Telescope (2021)
This is a space telescope built by the United States government. Used to observe light from the earliest and most distant galaxies and study the formation of stars and planets.
23. The European Extremely Large Telescope (2030)
proposed a large optical telescope to be constructed in northern Chile at an altitude of 5000 meters. It will study the first stars and galaxies that formed after the Big Bang.
The history of astronomy is a very interesting subject. There have been many amazing discoveries, and it has greatly helped to understand the universe.