-
Galileo created the first telescope - it had a one-and-a-half-inch lens and was displayed in an ornate frame.
Galileo's telescope had a one-and-a-half-inch lens and was displayed in an ornate frame. -
Johannes Hevelius created a refracting telescope which was 150 feet long. It swayed with the slightest breeze.
-
Sir William Herschel discovered the planet Uranus in 1781. Eight years later he received funding and completed a 40-foot telescope. Due to its size and weight is was not very effective.
-
John William Draper produced the first photograph of the moon using the daguerreotype process.
-
Lord Rosse completed construction of his reflecting telescope in Ireland. With its six-foot diameter primary mirror it allowed Rosse to discover the first spiral nebula.
-
The 40-inch telescope at Yerkes Observatory was completed, it remains the largest ever reflecting telescope.
-
The Hooker 100-inch telescope was built at the Mount Wilson Observatory in California.
-
Clyde Tombough discovered Pluto with the 13-inch telescope at Lowell Observatory in Arizona.
-
The 200-inch Hale Telescope in California has made crucial discoveries about galaxies and quasars.
-
The Hubble Space Telescope entered Earth's orbit and began photographing the universe.
-
The twin-mirrored Large binocular Telescope was built in Arizona. It will deliver ten times shaper images than the Hubble telescope.