Arian Araf Sadi
Space Shuttle Atlantis, flying mission servicing 4 (STS-125),The fifth and the final human spaceflight to visit the observatory.
General Information
- NSSDC ID-1990-037B
- Organization- NASA/ESA/STScI
- Launce date- 24 April 1990, 8:33:51 am EDT
- Launce vehicle- Space Shuttle Discovery-(STS-31)
- Mission length- 19 years, 9 months and 29 days elapsed
- De orbited- 2013-2021
- Mass- 11,110 kg (24,500 Ib)
- Type of orbit Near – circulation low Earth orbit
- Orbit height- 559 km (347 mi)
- Orbit period- 96-97 minutes
- Orbit velocity- 7,500 m/s (25,000 ft/s)
- Acceleration due to gravity- 8.169m/s2 (26.80 ft/s2)
- Location-Low Earth orbit
- Telescope style- Ritchey-Chretien reflector
- Wave length optical, ultraviolet , near infrared
- Focal length-57.6 m(189 ft)
Instruments
- NICMOS infrared camera/spectrometer
- ACS optical survey camera (partially failed)
The Hubble Space Telescope (HST) is a space telescope that was carried into orbit by the space shuttle in 1990.It is named after the American astronomer Edwin Hubble. Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research too and a public relations boon for astronomy. The HST is collaboration between NASA and the European Space Agency, and is of NASA’s Great Observatories, along with the Compton Gamma Ray observatory, the Chandra X-ray Observatory and the Spitzer Space Telescope. Space telescopes were proposed as early as 1923. Hubble was funded in the 1970’s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, scientists found that the main mirror had been ground incorrectly, severely compromising the telescope’s capabilities .However, after a servicing mission in 1993, the telescope was restored to its intended quality. Hubble’s orbit outside the distortion of Earth’s atmosphere allows to it to take extremely sharp images with almost no background light. Hubble’s ultra-deep field image, four instance, is the .most detailed visible-light image even made of the universe’s most distant objects. Many Hubble observations have led to break troughs in astrophysics, such as accurately determining the rate of expansion of the universe. Hubble is the only telescope ever designed to be serviced in space by astronauts. Four servicing missions were performed1993-2002, but the fifth was canceled on safety grounds following the Space Shuttle Columbia disaster. However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing mission to function until at least 2014, when its successor, the James Webb Space Telescope (JWST), is due to be launched.
The writer is a student of STD VI
The Ark Int’l School