Preceden

history of the telescope

Main

Hans Lippershey discovers that holding two lenses up bring objects closer.

1608

Galileo built a telescope,first telescope capable of being used for astronomy.

1609

Johannes Kepler switches from a concave eyepiece to a convex eyepiece.

1611

James Gregory designed a telescope using two mirrors (still used today).

1663

Newton produces the first successful reflecting telescope.

1668

Cassegrain proposed a similar design using a convex secondary.

1672

Johannus saw that the longer the telescope was the closer the colored dots.

1673

So he constructed a telescope which was 140 feet long.

1673

Chester Moor Hall develops an achromatic lens.

1729

James Short invents the first parabolic and elliptic, distortionless mirror.

1730

Historians claim that the triplet was introduced in 1765 by Peter Dolland.

1757

Sir William H constructs a forty foot long telescope,

1789

with a four-foot diameter mirror.

1789

H. Dennis Taylor, designed and patented the now famous, triplet design.

1893

Edwin Hubble invented the Hubble space telescope.

1929

The hubble space telescopewas lifted into orbit by the space shuttle.

1990

The twin mirrored large binocular telescope saw first light.

2005