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Revision as of 06:58, 28 September 2005
- This article is about the future ESA space telescope. For the telescope on the Canary Islands, see William Herschel Telescope
| File:Herschel space observatory.jpg | |
| Organization | ESA |
|---|---|
| Wavelength regime | infrared |
| Orbit height | 1.5×10km from Earth (L2 Lagrangian point) |
| Orbit period | 1 year |
| Launch date | (July 2007) |
| Deorbit date | (2010 - 2011) |
| Mass | 3,300kg |
| Other names | Far Infrared and Submillimetre Telescope (FIRST) |
| Webpage | http://www.jwst.nasa.gov |
| Physical Characteristics | |
| Telescope Style | Cassegrain reflector |
| Primary Reflector Diameter | 3500 mm, f/0.5 |
| Collecting Area | 9.6m |
| Focal Length | 27000 mm |
| Instruments | |
| HIFI | Heterodyne Instrument for the Far Infrared |
| PACS | Photodetector Array Camera and Spectrometer |
| SPIRE | Spectral and Photometric Imaging Receiver |
The Herschel Space Observatory is a mission of the European Space Agency. It is to be launched in 2007 aboard an Ariane 5 rocket together with Planck and will enter a Lissajous 700 000 km diameter orbit 1.5 million kilometres away from Earth at the second Lagrange point of the Earth-Sun system.
The mission was formerly titled the Far Infrared and Sub-millimetre Telescope (or FIRST). It will be the first space observatory to cover the full far infrared and submillimetre waveband, and its telescope will have the largest mirror ever deployed in space (three and a half metres wide). It will specialise in collecting light from distant and poorly known objects, such as newborn galaxies thousands of millions of light-years away. The light will be focused onto three instruments with detectors kept at temperatures below 2 K.
Mission objectives:
- To study the formation of galaxies in the early universe and their subsequent evolution.
- To investigate the creation of stars and their interaction with the interstellar medium
- To observe the chemical composition of the atmospheres and surfaces of comets, planets and satellites
- To examine the molecular chemistry of the universe
The mission is named after Sir William Herschel, who discovered the infrared spectrum.
External Links
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