Wednesday, October 7, 2009

For Your Personal Rocketship Ride To The Stars - Visit Hubblesite

G'day Space Cadets!
Hubble Is a Reflecting Telescope
Hubble works on the same principle as the first reflecting telescope built in the 1600s by Isaac Newton. Light enters the telescope and strikes a concave primary mirror, which acts like a lens to focus the light. The bigger the mirror, the better the image. In Hubble, light from the primary mirror is reflected to a smaller secondary mirror in front of the primary mirror, then back through a hole in the primary to instruments clustered behind the focal plane (where the image is in focus).
Hubble Space Telescope Light Echoes From Red Supergiant Star V838 Monocerotis – October 2004 Close Up of Ancient, White Dwarf Stars in the Milky Way Galaxy Saturn Aurora — January 26, 2004 Comet 73P/Schwassmann-Wachmann 3 - Fragment B: Apr. 20, 2006

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