Results 171 to 180 of about 4,646,519 (213)
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Space Science Reviews, 2009
A retrospective is given on infrared sky surveys from Thomas Edison’s proposal in the late 1870s to IRAS, the first sensitive mid- to far-infrared all-sky survey, and the mid-1990s experiments that filled in the IRAS deficiencies. The emerging technology for space-based surveys is highlighted, as is the prominent role the US Defense Department ...
S. Price
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A retrospective is given on infrared sky surveys from Thomas Edison’s proposal in the late 1870s to IRAS, the first sensitive mid- to far-infrared all-sky survey, and the mid-1990s experiments that filled in the IRAS deficiencies. The emerging technology for space-based surveys is highlighted, as is the prominent role the US Defense Department ...
S. Price
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Sky surveys with ASCA — Large Sky Survey
Astronomische Nachrichten, 1998AbstractWe have carried out the first systematic wide‐area survey around a Galactic pole region with the ASCA satellite in the 0.7–10 keV energy band (Large Sky Survey; LSS). The observed area amounts to 7 deg2. To make the best use of ASCA capability, we have developed a new source‐detection method where the complicated detector responses are fully ...
Y. Ueda +10 more
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Sky surveys with ASCA — Deep Sky Survey
Astronomische Nachrichten, 1998AbstractASCA Deep Sky Survey (DSS) is aimed to investigate the constituents of the CXB in 2–10 keV band, by faint source survey observations reaching to the source confusion limit of ASCA X‐Ray Telescopes. So far, 0.29 deg2 sky regions were systematically studied and about 40% of the CXB intensity was resolved into discrete sources.
Y. Ogasaka +10 more
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Symposium - International Astronomical Union, 1998
Photographic surveys have played a vital role in virtually every area of astronomical research over the last 50 years. Indeed, one can make a strong case that Schmidt telescopes in general, and the Palomar 48-inch Schmidt in particular, have made the most substantial contribution to our understanding of the Universe—at least at optical wavelengths. The
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Photographic surveys have played a vital role in virtually every area of astronomical research over the last 50 years. Indeed, one can make a strong case that Schmidt telescopes in general, and the Palomar 48-inch Schmidt in particular, have made the most substantial contribution to our understanding of the Universe—at least at optical wavelengths. The
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Symposium - International Astronomical Union, 2005
Far-infrared (FIR), ultraviolet (UV), and soft X-ray observations are easily degraded by dust and gas between the source and the telescope. They must be made from space, where they are still affected by the interstellar medium (ISM) of our Galaxy. Fortunately the ISM is quite patchy, with several “cosmic windows” covering ∼ 100 deg2 of sky having ...
J. J. Condon +9 more
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Far-infrared (FIR), ultraviolet (UV), and soft X-ray observations are easily degraded by dust and gas between the source and the telescope. They must be made from space, where they are still affected by the interstellar medium (ISM) of our Galaxy. Fortunately the ISM is quite patchy, with several “cosmic windows” covering ∼ 100 deg2 of sky having ...
J. J. Condon +9 more
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1997
Photographic surveys have played a vital role in virtually every area of astronomical research over the last 50 years. Indeed, one can make a strong case that Schmidt telescopes in general, and the Palomar 48-inch Schmidt in particular, have made the most substantial contribution to our understanding of the Universe—at least at optical wavelengths. The
openaire +1 more source
Photographic surveys have played a vital role in virtually every area of astronomical research over the last 50 years. Indeed, one can make a strong case that Schmidt telescopes in general, and the Palomar 48-inch Schmidt in particular, have made the most substantial contribution to our understanding of the Universe—at least at optical wavelengths. The
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Far-Infrared Surveys of the Sky
Science, 1967A series of far-infrared surveys of the sky is searching for thermal radiation from interstellar grains and for other localized sources of far-infrared radiation. A balloon-borne germanium bolometer, cooled by liquid helium, is used in association with a telescope and spectral filters.
W F, Hoffmann +3 more
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The challenge of blending in large sky surveys
Nature Reviews Physics, 2021Peter Melchior +4 more
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Publications of the Astronomical Society of the Pacific, 1995
Cameras containing arrays of charge-coupled devides--or which are otherwise capable of sustained high data rates--enable optical sky surveys that compete in efficiency with photographic surveys in terms of area of sky covered per unit observing time.
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Cameras containing arrays of charge-coupled devides--or which are otherwise capable of sustained high data rates--enable optical sky surveys that compete in efficiency with photographic surveys in terms of area of sky covered per unit observing time.
openaire +1 more source