Scanning the Heavens

Details Scanning the Heavens Scanning the Heavens

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994amsci..82..512h&link_type=abstract

American Scientist (ISSN 0003-0996), vol. 82, no. 6, p. 512-516

Astronomy and Astrophysics

Astronomy

Astronomical Photography, Data Processing, Digital Data, Image Processing, Pattern Recognition, Sky Surveys (Astronomy), Astronomical Catalogs, Charge Coupled Devices, Galaxies, Stars, Telescopes, Universe

Scientific paper

Gleaning further clues to the structure of the universe will require larger data samples. To that end, a major new survey of the skies called the Sloan Digital Star Survey (SDSS), is in preparation. It will catalog some 50 million galaxies and about 70 million stars. A new 2.5 meter telescope to be erected at Apache Point Observatory in New Mexico will be dedicated to the survey. The telescope is not the key innovation that will make the survey possible. The crucial factor is the technology for digitally recording large numbers of images and spectra and for automating the analysis, recognition, and classification of those images and spectra. The methods to be used are discussed.

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