Herschel telescope and sun-shield
May 21, 2009
The Herschel telescope is a classic Cassegrain design with a 3.5-m primary mirror â€” the largest ever launched into space â€” and a smaller secondary mirror. This powerful telescope will allow astronomers to look deep into space by detecting light emitted in the far-infrared and sub-millimetre regions of the spectrum. Earth's atmosphere prevents most of this light from reaching ground-based telescopes. From orbit around the second Lagrange point of the Sun-Earth system, L2, 1.5 million kilometres from Earth, Herschel will provide unprecedented views of the Universe by bridging the gap between previous infrared observatories and ground-based radio telescopes. This picture of the satellite was taken during testing at ESA's European Space Research and Technology Centre, ESTEC, the Netherlands.
Topics: Technology Internet, Space, Observational astronomy, Astronomy, William Herschel Telescope, Herschel Space Observatory, Infrared telescopes, Telescope, Infrared, Spaceflight, Telescope types, Telescopes, Space exploration, ESTEC, Technology Centre, ESA, The Netherlands