A billion stars, a few million galaxies

Details A billion stars, a few million galaxies A billion stars, a few million galaxies

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994s%26t....87...32h&link_type=abstract

Sky & Telescope, vol. 87, no. 5, p. 32-34

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Applications

Analog To Digital Converters, Astronomical Catalogs, Astronomical Photography, Data Bases, Image Processing, Scanners, Sky Surveys (Astronomy), All Sky Photography, Data Base Management Systems, Laser Applications, Photographic Plates

Scientific paper

The creation of an all-sky computerized astronomical catalog is discussed. The data source for the catalog was the first National Geographic Society-Palomar Observatory Sky Survey (POSS 1). Most of the plates produced in POSS 1 with the Oschin 48-inch Schmidt telescope were recently scanned by a team of astronomers using an automated plate scanner (APS) which is a high-speed laser scanner designed specifically to digitized information on astronomical photographs. To access the cataloged information easily, a specialized database program called StarBase was written. The expected size of the complete database (the catalog of objects plus the pixel data for the detected images) is 400 gigabytes. Scanning of 644 pairs of blue and red plates, covering the entire sky except for the crowded region within 20 deg of the galactic plane, has been completed. been completed.

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