Meeting the optical requirements of large focal-plane arrays
Technological advances will allow the placement of many Terahertz detectors at the focal plane of a single telescope. For a telescope of a given diameter and wavelength of operation, there is a limit to the number of usable detectors imposed by diffraction and optical aberrations. These effects can...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.337.8898 2023-05-15T18:22:34+02:00 Meeting the optical requirements of large focal-plane arrays Antony A. Stark The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.337.8898 http://arxiv.org/pdf/astro-ph/0305570v1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.337.8898 http://arxiv.org/pdf/astro-ph/0305570v1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://arxiv.org/pdf/astro-ph/0305570v1.pdf text 2003 ftciteseerx 2016-01-07T23:44:59Z Technological advances will allow the placement of many Terahertz detectors at the focal plane of a single telescope. For a telescope of a given diameter and wavelength of operation, there is a limit to the number of usable detectors imposed by diffraction and optical aberrations. These effects can be ameliorated through an optical design where the magnification of the telescope’s secondary mirror is small and the detector package is therefore located near the secondary mirror. A field mirror can be used to flatten the image, and the focal reducer which matches the detector to the telescope can also provide an image of the aperture for placement of filters and stops. A design concept is presented for the South Pole Telescope which comprises a 10 meter diameter off-axis paraboloidal primary mirror, a Gregorian secondary mirror, a tertiary chopper, dewar widow, Lyot stops, band-pass filter, and space behind the focal plane for cryogenics. The telescope is bilaterally symmetric, and all apertures are unblocked. The field of view is one degree in diameter, so this telescope can feed an array of several × 10 4 detectors at Terahertz frequencies. I. Text South pole Unknown South Pole Dewar ENVELOPE(-21.158,-21.158,-80.534,-80.534) |
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ftciteseerx |
language |
English |
description |
Technological advances will allow the placement of many Terahertz detectors at the focal plane of a single telescope. For a telescope of a given diameter and wavelength of operation, there is a limit to the number of usable detectors imposed by diffraction and optical aberrations. These effects can be ameliorated through an optical design where the magnification of the telescope’s secondary mirror is small and the detector package is therefore located near the secondary mirror. A field mirror can be used to flatten the image, and the focal reducer which matches the detector to the telescope can also provide an image of the aperture for placement of filters and stops. A design concept is presented for the South Pole Telescope which comprises a 10 meter diameter off-axis paraboloidal primary mirror, a Gregorian secondary mirror, a tertiary chopper, dewar widow, Lyot stops, band-pass filter, and space behind the focal plane for cryogenics. The telescope is bilaterally symmetric, and all apertures are unblocked. The field of view is one degree in diameter, so this telescope can feed an array of several × 10 4 detectors at Terahertz frequencies. I. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Antony A. Stark |
spellingShingle |
Antony A. Stark Meeting the optical requirements of large focal-plane arrays |
author_facet |
Antony A. Stark |
author_sort |
Antony A. Stark |
title |
Meeting the optical requirements of large focal-plane arrays |
title_short |
Meeting the optical requirements of large focal-plane arrays |
title_full |
Meeting the optical requirements of large focal-plane arrays |
title_fullStr |
Meeting the optical requirements of large focal-plane arrays |
title_full_unstemmed |
Meeting the optical requirements of large focal-plane arrays |
title_sort |
meeting the optical requirements of large focal-plane arrays |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.337.8898 http://arxiv.org/pdf/astro-ph/0305570v1.pdf |
long_lat |
ENVELOPE(-21.158,-21.158,-80.534,-80.534) |
geographic |
South Pole Dewar |
geographic_facet |
South Pole Dewar |
genre |
South pole |
genre_facet |
South pole |
op_source |
http://arxiv.org/pdf/astro-ph/0305570v1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.337.8898 http://arxiv.org/pdf/astro-ph/0305570v1.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766201971766722560 |