Hubble Space Telescope - Wikipedia
The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. ... Based on early lens models, a fifth image was predicted to reappear by the end of 2015. [195] Refsdal reappeared as predicted in …
Hubble's Mirror Flaw - NASA Science
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).
Optics - NASA Science
The Hubble Space Telescope’s mirror-based optical system collects and focuses light from the universe to be analyzed by science and guidance instruments. The optical system, called the Optical Telescope Assembly (OTA), gives Hubble a unique view of the universe by gathering infrared, visible and ultraviolet light.
Hubble Space Telescope - NASA Science
Apr 24, 1990 · Dr. Brian Welch explains Hubble's image of a massive galaxy cluster creating a gravitational lens that magnified the same supernova exploding four different times! A dark, Jedi-like cloak of dust obscures a newborn star that is shooting twin jets out into space. Dr. Kenneth Carpenter explains this breathtaking image.
The Telescope - HubbleSite
Hubble is a Cassegrain reflector telescope. Light from celestial objects travels down a tube, is collected by a bowl-like, inwardly curved primary mirror and reflected toward a smaller, dome-shaped, outwardly curved secondary mirror.
Hubble's Optics - NASA
Apr 28, 2023 · The optical telescope assembly of the Hubble Space Telescope consists of two mirrors, support trusses and the focal plane structure. The interactive page highlights the optical assembly of Hubble.
The testing error that led to Hubble mirror fiasco
Aug 18, 1990 · Tests by NASA earlier this month showed that a lens in the test instrument, called the ‘reflective null corrector’, is about a millimetre askew. Preliminary analysis indicates that an...
Instruments - HubbleSite
Hubble was designed to hold six science instruments, each observing the universe in a unique way. The telescope has cameras, which capture Hubble's famed images, and spectrographs, which break light into colors for analysis. The current suite of instruments is listed below.
Hubble is designed to make observations of astronomical objects in visible light, near infrared, and near ultraviolet wavelengths—it can observe wavelengths in the range of 100–2500 nm. (Visible light lies within this range, from 400–700 nm.)
History: The Spherical Aberration Problem - ESA/Hubble
Galaxy M100 taken with WFPC1 (left) and WFPC2 (right) shows the greatly improved image quality after the telescope’s spherical aberration was corrected. The astronauts also removed the High-Speed Photometer instrument and replaced it with COSTAR (Corrective Optics Space Telescope Axial Replacement).