![]() Ground-based telescopes seldom provide resolution better than 1.0 arc-seconds, HST’s resolution is about ten times better, or 0.1 arc-seconds. Due to its location above the hazy atmosphere of Earth, these science instruments can produce high resolution images of astronomical objects. HST incorporates three cameras, two spectrographs and fine guidance sensors (primarily used for astrometric observations). There are currently five TDRS satellites located at various locations in the sky. ![]() The telescope has communications antennae so that astronomers and technicians can transmit instructions.įour antennae send and receive information between the telescope and the Space Telescope Operations Control Centre at Nasa’s Goddard Space Flight Centre, using the Tracking and Data Relay Satellite (TDRS) system. HST works much like a robot or computer in space, performing tasks only in response to detailed instructions from people on the ground. "The HST is a co-operative programme of the European Space Agency (ESA) and the National Aeronautics and Space Administration (Nasa)." Hubble tracking and data relay system (TDRS) The mission also involved several upgrades to extend Hubble’s service life until 2014. The telescope was attached with a new device to help de-orbiting when it is decommissioned. ![]() The final Service Mission 4 (SM4), flown in May 2009, installed two new scientific instruments and repaired two failed instruments. Nasa, however, conducted five space shuttle servicing missions on the HST for extending its operational life. The observatory was originally designed to have a lifespan of 15 years. STScI is operated for Nasa by the Association of Universities for Research in Astronomy (AURA). The science operations and control of the telescope lie in the hands of the Space Telescope Science Institute (STScI) at the Johns Hopkins University Homewood Campus in Baltimore, Maryland. HST is a 2.4m reflecting telescope which was launched into a low-Earth orbit (600km) by the crew of the space shuttle Discovery (STS-31) in 1990. The aim of the observatory is to operate a long-lived space-based observatory for the benefit of the international astronomical community. The HST is a co-operative programme of the European Space Agency (ESA) and the National Aeronautics and Space Administration (Nasa). Hubble celebrated its 20th anniversary in orbit on 24 April 2010. HST is an observatory, originally conceived in the 1940s and finally made operational in the 1990s. Hubble Space Telescope (HST) was launched into orbit around Earth on 25 April 1990. The Hubble Space Telescope (HST) was launched into orbit around Earth on 25 April 2001.Īn astronaut during the satellite's three servicing visits.
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