Seeing the Universe
before 1610 - naked eye astronomy 1608 - Galileo's hand held telescopes 1673 - Hevelius' long telescopes 1780 - Herschel's large reflectors 1838 - Meridian Circles 1845 - Rosse's Leviathian 1890 - Barnard's camera1923 - The Hooker 100 inch
1948 - The Palomar 200 inch 1990 - The Hubble Space Telescope 1998 - The Keck 10 metre pair 2000 - The VLT array 2015 - Planning for the JWST 2020? - Planning the OWL How much further?
In 1923, Edwin Hubble used the 100 inch Hooker telescope to resolve stars
and measure the distance to the Andromeda spiral nebula. A long standing problem was
settled. Incontrovertible evidence that spiral nebulae are extremely large,
very distant star clusters like the Milky Way galaxy was finally obtained.
Mount Wilson Observatory
The 100 inch Hooker Telescope (Mount Wilson Observatory)