Around 1608/9
Galileo wasn't the first to make a telescope but he discovered the telescope at the age of 46.
Galileo created his first telescope in around two months in 1609. It was a refracting telescope with a convex objective lens and a concave eyepiece. This instrument revolutionized astronomy and allowed Galileo to make groundbreaking astronomical observations.
yes, the first telescope was made by him
I think that it was expected to make the first telescope.
in 1609 Galileo made first telescopes
No, Galileo was not the first person to look through a telescope. The invention of the telescope is credited to Hans Lippershey, a Dutch eyeglass maker, around 1608. Galileo improved upon the design and used it to make groundbreaking astronomical discoveries.
Galileo Galilei was the first astronomer to make extensive use of the telescope for astronomy. He made several important discoveries, such as the moons of Jupiter and the phases of Venus, using his telescope in the early 17th century.
Galileo Galilei first used the "new" telescope in 1609
Galileo was the first astronomer to use a telescope to observe celestial objects in detail. This helped him make groundbreaking discoveries such as the moons of Jupiter and the phases of Venus, which provided strong evidence for the heliocentric model of the solar system.
Galileo perfected the telescope.
Galileo used and made the first telescope.
Galileo Galilei