History of the Telescope

Events

1608 Invented by Hans Lippershey

1608

1609 Galileo improves for astronomy.

1609

1668 Reflecting Telescope (Newton)

1668

1758 Achromatic Lens (John Dollond)

1758

1857 Silvered glass mirrors (von Steinheil and Foucault)

1857

1937 Radio Telescope (Grote Reber)

1937

1972 Space telescopes

Approx. 1972

1980+ Active/adaptive optics

Approx. 1980 - 2000