In particular, there was a need for optical follow-up of interesting sources in the radio surveys being conducted at the Jodrell Bank and Mullard observatories (both located in the UK), which could not be done from the southern hemisphere location of the AAT. For Herschel, the solar array is fixed on the bottom part of the baffle designed to protect the cryostat from the Sun. Both SVMs are of octagonal shape and, for both, each panel is dedicated to accommodate a designated set of warm units, while taking into account the heat dissipation requirements of the different warm units, of the instruments, as well as the spacecraft. The HERSCHEL 3.5 m telescope is operated about 1.5 million km away from Earth beyond the lunar orbit …  The observatory sifted through star-forming clouds—the "slow cookers" of star ingredients—to trace the path by which potentially life-forming molecules, such as water, form. The telescope mount is located on a cylindrical concrete pier so that the centre of rotation is 13.4 m (44 ft) above ground level, which lifts the telescope above ground-layer air turbulence for better seeing. The observatory was capable of seeing the coldest and dustiest objects in space; for example, cool cocoons where stars form and dusty galaxies just starting to bulk up with new stars. [note 1] The total cost of the telescope, including the dome and the full initial suite of instruments, was £15M (in 1984, equivalent to £49M in 2019); within budget once inflation is taken into account. Description: The Herschel Space Observatory is a 3.5 meter telescope observing the Far-Infrared and Submillimeter Universe.  The dome was designed to minimise wind stresses and can support up to its own weight again in ice during inclement weather. The telescope, which is named after William Herschel, is part of the Isaac Newton Group of Telescopes. The Herschel spacecraft was at a point in space about 1.5 million km away from the Earth in the opposite direction to the Sun; that’s about 4 times as far away as the distance to the Moon. As a result, all of the other telescopes at the observatory contract to use the WHT plant for their realuminising (with the exception of the Gran Telescopio Canarias, which has its own plant). It is designed to fulfil the pointing and slewing requirements of the Herschel and Planck payload. The telescope consists of a 4.20 m (165 in) f/2.5 primary mirror made by Owens-Illinois from Cervit, a zero-expansion glass-ceramic material, and ground by Grubb Parsons. The telescopes were to be a 1.0 m (39 in) (which became the Jacobus Kapteyn Telescope), the 2.5 m (98 in) Isaac Newton Telescope which was to be moved from its existing site at Herstmonceux Castle, and a 4m class telescope, initially planned as a 4.5 m (180 in). , The WHT was first conceived in the late 1960s, when the 3.9 m (150 in) Anglo-Australian Telescope (AAT) was being designed.  Changing between the Cassegrain and Nasmyth foci takes a matter of seconds and may be done during the night; switching to and from prime focus requires replacing the secondary mirror with a prime focus assembly during daytime (the two are mounted back-to-back) which takes around 30 minutes. August 2011: The Herschel Space Observatory's large telescope and state-of-the-art infrared detectors provide the first confirmed finding of oxygen molecules in space -- discovered in the Orion star-forming complex. The Herschel Space Observatory's mission was a Cornerstone mission in the European Space Agency. During that journey, they were calibrated and checked out to make sure they're in perfect working order. , The observatory was carried into orbit in May 2009, reaching the second Lagrangian point (L2) of the Earth–Sun system, 1,500,000 kilometres (930,000 mi) from Earth, about two months later. In 2000, FIRST was renamed Herschel. A formal handover of the overall responsibility of Herschel was declared from the programme manager Thomas Passvogel to the mission manager Johannes Riedinger. However, the alt-azimuth design requires continuous computer control, compensation for field rotation at each focus, and results in a 0.2 degree radius blind spot at zenith where the drive motors cannot keep up with sidereal motion (the drives have a maximum speed of one degree per second in each axis). The Herschel Space Observatory's mission has been designed to unveil a face of the early Universe that has remained hidden until now.  The dome and telescope rest on separate sets of foundations (driven 20 metres (66 ft) down into the volcanic basalt), to prevent vibrations caused by dome rotation or wind stresses on the building affecting the telescope pointing.. , An October 2011 report published in Nature states that Herschel's measurements of deuterium levels in the comet Hartley 2 suggests that much of Earth's water could have initially come from cometary impacts. At 3.5-metres in diameter the mirror collected long-wavelength radiation from some of the coldest and most distant objects in the Universe. Scientists using the Herschel space observatory have made the first definitive detection of water vapor on the largest and roundest object in the asteroid belt, Ceres. Herschel is named after Sir William Herschel, the discoverer of the infrared spectrum and planet Uranus, and his sister and collaborator Caroline Herschel..  Visitor instruments can use either the Cassegrain focus or one of the Nasmyth foci. This image shows the Large Magellanic Cloud galaxy in infrared light as seen by the Herschel Space Observatory, a European Space Agency-led mission with important NASA contributions, and NASA’s Spitzer Space Telescope.  The primary is solid and un-thinned, so no active optics system is required, despite its weight of 16.5 tonnes (16.2 long tons). The telescope's lifespan was governed by the amount of coolant available for its instruments; when that coolant ran out, the instruments would stop functioning correctly.  It was selected for implementation in 1993, following an industrial study in 1992–1993. On each spacecraft, the power subsystem consists of the solar array, employing triple-junction solar cells, a battery and the power control unit (PCU). The British astronomical community saw the need for telescopes of comparable power in the northern hemisphere.  The BTA-6 and Multi Mirror Telescope had demonstrated during the 1970s the significant weight (and therefore cost) savings which could be achieved by the alt-azimuth design compared to the traditional equatorial mount for large telescopes. This results in very … Some of this funding shortfall has been made up by other partners increasing their contributions, and some by efficiency savings and cutbacks. The Herschel Space Observatory (Herschel) is an ESA (European Space Agency) project with instruments funded by ESA member states. The WHT is equipped with a wide range of instruments operating over the optical and near-infrared regimes. September 12, 2020 | A Multi-Decade Mystery Settled: Presence of Resonating Cavities Above Sunspots Has Been Confirmed; September 12, 2020 | Stunning Satellite Imagery of West Coast Wildfires Shows Portland, Eureka, Eugene, San Francisco, and Sacramento … This function is performed by the attitude control computer (ACC) which is the platform for the ACMS. The mirror's blank was manufactured by Boostec in Tarbes, France; ground and polished by Opteon Ltd. in Tuorla Observatory, Finland; and coated by vacuum deposition at the Calar Alto Observatory in Spain. , On 21 July 2009, Herschel commissioning was declared successful, allowing the start of the operational phase. For the ground-based telescope, see, SRON Netherlands Institute for Space Research, List of largest optical reflecting telescopes, "Herschel space telescope finishes mission", "ESA launches Herschel and Planck space telescopes", "Herschel closes its eyes on the Universe", "NSSDC Spacecraft Details: Herschel Space Observatory", "Revealing the invisible: Caroline and William Herschel", "The FIRST Mission: Baseline, Science Objectives and Operations", "Herschel Space Telescope Closes Its Eyes on the Universe", "A Φ 3.5 M SiC telescope for Herschel Mission", "The largest telescope mirror ever put into space", "PACS – Photodetector Array Camera and Spectrometer", "The Photodetector Array Camera and Spectrometer (PACS) for the Herschel Space Observatory", "SPIRE – Spectral and Photometric Imaging Receiver", "HIFI – Heterodyne Instrument for the Far Infrared", "Herschel: Exploring the Birth of Stars and Galaxies", Herschel Science Centre Operations (B)Log, "Herschel's 'sneak preview': a glimpse of things to come", "Surprising Hole in Space Discovered by Herschel Telescope", "Herschel/HIFI: first science highlights", "Herschel Finds Oceans of Water in Disk of Nearby Star", "Herschel links Jupiter's water to comet impact", "Herschel Telescope Detects Water on Dwarf Planet – Release 14-021", "Scientists could aim derelict telescope for moon impact", "Herschel Spacecraft Won't 'Bomb' the Moon, But GRAIL Will", "The Sweet Spot: Spectroscopy from 12 to 230μm", ESA launches Herschel Space Observatory and Planck Satellite, Space Applications and Telecommunications Centre, Space Telescope European Coordinating Facility, European Launcher Development Organisation, https://en.wikipedia.org/w/index.php?title=Herschel_Space_Observatory&oldid=994990117, Derelict satellites in heliocentric orbit, Short description is different from Wikidata, Start-date transclusions with invalid parameters, End-date transclusions with invalid parameters, Articles containing potentially dated statements from 2010, All articles containing potentially dated statements, Wikipedia articles in need of updating from January 2018, All Wikipedia articles in need of updating, Creative Commons Attribution-ShareAlike License, Heterodyne Instrument for the Far Infrared, Photodetector Array Camera and Spectrometer, Spectral and Photometric Imaging Receiver, Guide Herschel on a course toward the Moon for a destructive high-speed collision that would help in the search for, This page was last edited on 18 December 2020, at 16:34. 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