The Automated Plate Scanner Catalog of the Palomar sky survey. I - Scanning parameters and procedures

Details The Automated Plate Scanner Catalog of the Palomar sky survey. I - Scanning parameters and procedures The Automated Plate Scanner Catalog of the Palomar sky survey. I - Scanning parameters and procedures

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..521p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 687, p. 521-526.

Astronomy and Astrophysics

Astronomy

81

Astronomical Catalogs, Data Bases, Image Processing, Sky Surveys (Astronomy), Astronomical Photography, Densitometers, Isophotes, Photographic Plates

Scientific paper

We have just completed scanning glass copies of the blue and red plates in the original Palomar Observatory-National Geographic Sky Survey (POSS I) for the fields with b greater than 20 deg. All of the detected images are being cataloged with positions, shapes, magnitudes, and colors. The stellar and nonstellar images are separated using a neural network approach. We estimate that there will be nearly a billion stellar objects and image data for several million galaxies in the finished data base. The data base, including the cataloged objects and the pixel data for the nonstellar images, will be available to the scientific community on-line via Internet. This paper is the first of a series describing the APS Catalog of the POSS I. In this first paper, we describe the operation of the APS and the scanning procedures and parameters of the POSS I.

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