The Herschel instruments cover the far infrared to submillimeter range of the spectrum (from 80 to 670 microns). Feedhorns provide a roughly The Herschel Space Observatory was a space observatory built and operated by the European Space Agency (ESA). Background The Herschel Space Observatory is an ESA cornerstone mission, for high spatial resolution observa- An internal beam steering mirror allows spatial modulation of the telescope beam, and mapping observations can also be made by drift-scanning the telescope. The photometer and spectrometer both have cold pupil stops conjugate with the Herschel secondary mirror, which is the system pupil for the telescope and defines a 3.29-m diameter used portion of the primary.

from ~ late 2020, 70% of the time on the telescope will be used to carry out dedicated surveys with the new instrument.

The HERSCHEL 3.5 m telescope is operated about 1.5 million km away from Earth beyond the lunar orbit in antisolar direction and it performs observations in the far-infrared and submillimetre range of the electromagnetic spectrum. Given the complexity of mounting and dismounting WEAVE, the current plan is to change to …

Its primary mirror was 3.5 metres (11.5 feet) across. It was active from 2009 to 2013, and was the largest infrared telescope ever launched, carrying a 3.5-metre (11.5 ft) mirror and instruments sensitive to the far infrared and submillimetre wavebands (55–672 µm). It carried the largest and most powerful infrared telescope ever flown in space, and three sensitive scientific instruments which had to be operated at temperatures close to absolute zero.

The lowest spectral resolution that is planned to be used for spectrophotometric observations is 1 cm-1.

The remaining 30% of the time is available to the community for observations with the current Cassegrain instruments, with visiting instruments or with WEAVE. After the commissioning of WEAVE, i.e. The FTS has a field of view of 2.6 arcminutes. Herschel was the largest telescope launched into space. Astrium has been awarded the European Space Agency contract to provide the complete integrated payload module for Herschel, including the all-silicon carbide space telescope mirror and the superfluid liquid helium cryostat cooler necessary to maintain the telescope optics at a temperature of … 1.2. The angular resolution is determined by the telescope diffraction limit, with FWHM beam widths of approximately 17, 24 and 35 arcseconds at 250, 360 and 520µm, respectively. The Herschel Space Observatory was launched on May 14 2009 and operated for nearly four years. The Herschel Observers'Manual provides further information about Herschel pertinent to using the observatory from the perspective of an observer. Herschel telescope ready to shift science into high gear BY STEPHEN CLARK SPACEFLIGHT NOW Posted: January 2, 2010.