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  • Hubbles Mirror Flaw - Science@NASA
    Hubble is a type of telescope that uses mirrors instead of lenses to bring distant objects into focus Its primary mirror is one large 7 9-foot (2 4-meter) diameter disk of Ultra-Low Expansion Glass ® weighing 1,825-pounds (828-kilograms)
  • Primary mirror - Wikipedia
    The Hubble Space Telescope has a 2 4 metres (7 feet 10 inches) primary mirror Radio and submillimeter telescopes use much larger dishes or antennae, which do not have to be made as precisely as the mirrors used in optical telescopes
  • What was wrong with Hubbles mirror, and how was it fixed?
    In late June, Hubble failed a focusing test Its mirrors had been carefully ground to focus incoming light from celestial objects, but the images were smeared by a halo-like fog The cause was spherical aberration in its primary mirror
  • ESA Science Technology - Hubble Primary Mirror
    Workers study Hubble's main, eight-foot (2 4 m) mirror Hubble, like all telescopes, plays a kind of pinball game with light to force it to go where scientists need it to go When light enters Hubble, it reflects off the main mirror and strikes a second, smaller mirror
  • Hubble Space Telescope - The Design - Light, Mirror, Designed . . . - JRank
    Light follows a Z-shaped path through the telescope First, light from the target travels straight down the tube to the primary mirror This reflects the light, focusing it on the secondary mirror
  • Hubble Space Telescope primary-mirror characterization by measurement . . .
    The reflective null corrector used to manufacture of the Hubble Space Telescope contains valuable information about the prescription of the primary mirror since an excellent null was achieved between the null-corrector wave front and the primary-mirror wave front
  • Repairing Hubble - National Air and Space Museum
    Soon after the Hubble Space Telescope was launched in 1990, images and data from its instruments revealed that its main mirror was optically flawed It suffered from spherical aberration—not all portions of the mirror focused to the same point
  • Episode 132: 1. 3 Millimeters (Hubble Mirror Flaw) - The Space Above Us
    On the latest episode of The Space Above Us, we learn about the major systems of the Hubble Space Telescope and take a deep dive on what was wrong with the mirror, how it happened, and how it wasn’t caught


















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