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Astrophysics and Space Science, 1994
The Sloan Digital Sky Survey is a project which will produce a detailed digital phometric map of half the northern sky to about 23 magnitude using a special purpose wide field telescope of 2.5 meter aperture. This map will be used to select about a million galaxies and 100,000 quasars, for which high resolution spectra will be obtained using the same ...
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The Sloan Digital Sky Survey is a project which will produce a detailed digital phometric map of half the northern sky to about 23 magnitude using a special purpose wide field telescope of 2.5 meter aperture. This map will be used to select about a million galaxies and 100,000 quasars, for which high resolution spectra will be obtained using the same ...
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1999
One of the essential data bases in radio astronomy are the all-sky surveys. These have been traditionally made by combining some northern survey with a southern one, often made with different instruments at some nearby frequency. The combinations led to many calibration problems since beams and observing methods were often not identical. For successful
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One of the essential data bases in radio astronomy are the all-sky surveys. These have been traditionally made by combining some northern survey with a southern one, often made with different instruments at some nearby frequency. The combinations led to many calibration problems since beams and observing methods were often not identical. For successful
openaire +1 more source
The infrared sky - A survey of surveys
Publications of the Astronomical Society of the Pacific, 1988A subjective review is given of the major milestones in infrared astronomy. Emphasis is placed on the survey efforts between 2 and 120 μm, the realm of the extrinsic photodetector. The historical developments in infrared astronomy and the pioneering, often marginally successful, survey attempts are put in the perspective of improving technology.
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Mapping sky, tree, and building view factors of street canyons in a high-density urban environment
, 2018Fang-Ying Gong +5 more
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Unrepresentative big surveys significantly overestimated US vaccine uptake
Nature, 2021Shiro Kuriwaki +2 more
exaly
Is the sky falling? new technology, changing media, and the future of surveys
, 2013M. Couper
semanticscholar +1 more source

