Description :

The Guide Star Photometric Catalog I (GSPC-I) is a all-sky catalog of secondary "standard-stars" that were used to perform the photometric calibration of the GSC-I. The GSPC-I consists of approximately 6 stars between 9-15th magnitude near the center of each of the Palomar and UKSTU survey fields. These were all observed using a photo-electric photometer.

References :

The Guide Star Photometric Catalog I
Lasker et al 1988 Ap.J.Supp.68,1

Properties :

Data Access :
GSPC 1.0 : download (from STScI) | download (from CDS)