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Instruments for a E...
Instruments for a European Extremely Large Telescope: the challenges of designing instruments for 30- to 100-m telescopes
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Russell, Adrian P. (author)
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Monnet, Guy (author)
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Quirrenbach, Andreas (author)
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Bacon, Roland (author)
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Redfern, Michael (author)
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- Andersen, Torben (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Ardeberg, Arne (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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Atad-Ettedgui, Eli (author)
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Hawarden, Timothy G. (author)
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Moorwood, Alan F. M. (editor)
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Iye, Masanori (editor)
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(creator_code:org_t)
- SPIE, 2004
- 2004
- English.
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In: Ground-based instrumentation for astronomy (Proceedings of the SPIE). - : SPIE. - 0819454249 ; 5492, s. 1796-1809
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http://dx.doi.org/10...
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Abstract
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- Designs for Extremely Large Telescopes (ELTs) are quite well advanced,but the requirements of instruments have had limited impact. Sinceprovision of a suitable environment for instruments is a critical aspectof all telescopes, we outline some well-known and some less-appreciatedchallenges of designing instruments for ELTs. A wide-field spectrometer(WFSPEC) with ~10 arcmin field-of-view, probably with AO correction ofground-layer seeing, illustrates the well-known difficulty of matchingmodern detector pixels to large (~0."3) images. The challenges ofexploiting wide-field (1'-2' FOV) high-performance AO systems on ELTsare illustrated by a Multi-Object Multi-field Spectrometer and Imager(MOMSI), which provides imaging and integral-field spectroscopy, atnear-diffraction-limited pixel scales, of targets in approximately 300subfields each. This instrument, roughly equivalent to all theastronomical spectrometers yet built, extracts ~200 times less of theavailable information from the ELT's FOV than near-future instruments on8-m class telescopes will do for their hosts. We emphasise the greatsize of such instruments (40-100 tonnes, 100-200 m3) and the need toaccommodate this size in telescope plans. A third area of challenge isthe exploitation of the potential capabilities of ELTs in the mid-IR,where they would offer powerful complements to JWST and ALMA;low-emissivity telescope designs and, possibly, cryogenic AO, may beneeded. Finally, we outline the potential challenges of correctingatmospheric dispersion effects.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Russell, Adrian ...
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Monnet, Guy
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Quirrenbach, And ...
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Bacon, Roland
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Redfern, Michael
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Andersen, Torben
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show more...
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Ardeberg, Arne
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Atad-Ettedgui, E ...
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Hawarden, Timoth ...
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Moorwood, Alan F ...
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Iye, Masanori
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Ground-based ins ...
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Lund University