Astronomy and Astrophysics – Astronomy
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.5422c&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #54.22; Bulletin of the American Astronomical Society, Vol. 28, p.908
Astronomy and Astrophysics
Astronomy
Scientific paper
We are making our digitized images from the APS scans of the red and blue first-epoch Palomar Observatory Sky Survey (POSS I) available as a WWW-accessible image database. Image requests are through the APS homepage at http://isis.spa.umn.edu, and are initially limited in field width and sky region. To create this database, images from each scanned POSS I plate are processed into a set of coordinate-referenced index and pixel files. Database management software then refers to each object's pixels within a requested sky region by plate, by sub-plate, and finally by each scanned image. These images are then assembled into a mosaic FITS format file, whose header contains astrometric and photometric information. While the current APS Catalog of the POSS I contains only matched images, the image database will include all images above the plate grain noise limit of 25 mu m in diameter. Thus for a given sky region, users will have access to both the object (star and galaxy) catalog data and to the actual pixel data. This project is sponsored by NASA ADP contract NAS5-32670.
Aldering Greg
Cabanela J.
Cornuelle Chris S.
Humphreys Roberta M.
Larsen Janus
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