Hubble Error

ShuttleAtlantis, flying Servicing Mission 4 (STS-125), the sixth and final Hubble mission Mission type Astronomy Operator NASA· ESA· STScI COSPAR ID 1990-037B SATCAT № 20580 how was the hubble telescope fixed Website nasa.gov/hubble hubblesite.org spacetelescope.org Mission duration Elapsed: 26years, 5months, 22days Spacecraft hubble error: time, money and millionths of an inch properties Manufacturer Lockheed (spacecraft) Perkin-Elmer (optics) Launch mass 11,110kg (24,490lb)[1] Dimensions 13.2×4.2m (43.3×13.8ft)[1] Power 2,800 watts Start of where is the hubble telescope mission Launch date April 24, 1990, 12:33:51(1990-04-24UTC12:33:51)UTC[2] Rocket Space ShuttleDiscovery (STS-31) Launch site Kennedy LC-39B Deployment date April 25, 1990[1] Entered service May 20, 1990[1] End of mission Decay

Hubble Telescope Replacement

date estimated 2030–2040[3] Orbital parameters Reference system Geocentric Regime Low Earth Semi-major axis 6,918.88km (4,299.19mi) Eccentricity 0.000283 Perigee 538.79km (334.79mi) Apogee 542.70km (337.22mi) Inclination 28.47° Period 95.47 minutes RAAN 342.12° Argument of perigee 159.60° Mean anomaly 334.64° Mean motion 15.08 rev/day Velocity 7.59km/s (4.72mi/s) Epoch September 21, 2016, 13:51:39UTC[4] Revolution number 24,968 Main telescope Type Ritchey–Chrétien reflector Diameter hubble telescope images 2.4m (7.9ft) Focal length 57.6m (189ft) Collecting area 4.5m2 (48sqft)[5] Wavelengths Near-infrared, visible light, ultraviolet Instruments NICMOS Near Infrared Camera and Multi-Object Spectrometer ACS Advanced Camera for Surveys WFC3 Wide Field Camera 3 COS Cosmic Origins Spectrograph STIS Space Telescope Imaging Spectrograph FGS Fine Guidance Sensor The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST is named after the astronomer Edwin Hubble, and is one of NASA's Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.[6] With a 2.4-meter (7.9ft) mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra. Hubble's orbit outside the distortion of Earth's atmosphere allows it to take extremely high-resolution images, with substantially lower background light t

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Hubble Telescope Facts

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Hubble Telescope Lens Manufacturer

Telescope (and what managers can learn from it) What went wrong with the Hubble Space Telescope (and what managers can learn from it) NASA's former director of astrophysics, Charlie Pellerin, has learned a thing about https://en.wikipedia.org/wiki/Hubble_Space_Telescope leadership and project failure Rohan Pearce (CIO) 29 March, 2012 14:35 - - - - print email Comments Charles 'Charlie' Pellerin. There's nothing unusual about having a bad day at the office. But some people have worse days than others, and in his time Charles (Charlie) Pellerin has had a few notable ones. Not many people find themselves having to explain why an organisation has invested a decade and half and http://www.cio.com.au/article/420036/what_went_wrong_hubble_space_telescope_what_managers_can_learn_from_it_/ in the vicinity of $3 billion on a project that has failed.That's the position Pellerin found himself in as NASA's director of astrophysics in the wake of the 1990 launch of the Hubble Space Telescope, which had what appeared to be an unfixable flaw in its optical system.It's difficult to overstate what a disaster this was and the humiliation faced by NASA; not just as an organisation but also the individuals who worked for the agency. A good friend of Pellerin who worked on the telescope fell ill in the wake of the launch and died. Two of Pellerin's senior staffers had to be removed from their offices by guards and taken to alcohol rehab facilities. "These are PhDs sitting at their desk getting drunk; this is how bad the stress was," says Pellerin.Most people faced with a disaster on the scale of Hubble might want to either bury themselves under a blanket in bed for a decade or two, or try (no doubt unsuccessfully) to forget it ever happened. Instead Pellerin set out to try to fix Hubble — and succeeded, in the process winning NASA's Distinguished Service Medal, the highest honour conferred by the agency. And with a stubbornness that some people may consider verges on the perverse,

Remember me Create an account Forgotten password Activate/Link subscription OpenAthens login Advertisement Advertisement Home News Space Technology This Week 18 August 1990 The testing error https://www.newscientist.com/article/mg12717301-000-the-testing-error-that-led-to-hubble-mirror-fiasco/ that led to Hubble mirror fiasco By Jeff Hecht in Boston NASA has established how a mirror aboard its $1.5 billion Hubble Telescope came to be the wrong shape. The agency said last week that errors in a test instrument apparently led Perkin-Elmer, which fabricated the optics, to finish the 2.4-metre primary mirror of the Hubble hubble telescope Space Telescope incorrectly. 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 error of this magnitude could cause the spherical aberration that prevents Hubble from focusing sharply. The crucial error, the misalignment of a lens by a the hubble telescope millimetre, is ‘very large' by optical standards, says Daniel Schroeder, an astronomer at Beloit College in Wisconsin, and a codesigner of Hubble. In some optical instruments, positions are measured to a fraction of the wavelength of light, less than a thousandth of a millimetre. Ironically, Perkin-Elmer ignored warnings of the problem detected by a cruder test instrument. NASA says that it trusted the refractive null corrector because it had been ‘certified' for final tests of the mirror's shape. Perkin-Elmer, which built Hubble at its Danbury plant in Connecticut, tested the primary and secondary mirrors separately, but no one tested the complete telescope before launch. An earlier check by NASA absolved the design itself of blame, leading the agency to narrow the inquiry to possible errors in the testing of the mirrors. Advertisement The reflective null corrector is a cylinder 76 centimetres high and about half a metre wide. It contains two mirrors and a lens, made specifically to test the Hubble primary. By passing light between two mirr