The Automated Plate Scanner Catalog of the Palomar Sky Survey I. Scanning Parameters and Procedures
Abstract
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 >/= |20 deg.|. All of the detected images are being cataloged with positions, shapes, magnitudes and colors. The stellar and non-stellar 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 database. The database, including the cataloged objects and the pixel data for the non-stellar 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 for the POSS I. (SECTION: Instrumentation and Data Analysis)
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- May 1993
- DOI:
- 10.1086/133186
- Bibcode:
- 1993PASP..105..521P
- Keywords:
-
- Astronomical Catalogs;
- Data Bases;
- Image Processing;
- Sky Surveys (Astronomy);
- Astronomical Photography;
- Densitometers;
- Isophotes;
- Photographic Plates;
- Astronomy;
- CATALOGS;
- ASTRONOMICAL DATA BASES: MISCELLANEOUS