Astrophysics (Index)About

Astrographic Catalog

(AC, Astrographic Chart)
(historical star catalog of the whole sky to magnitude 11)

The Astrographic Catalog was to be the product of an effort begun in 1887 to photograph the entire sky down to magnitude 11.5. As conceived, it would be a reference for a simultaneous analogous project, the Cart du Ciel covering the sky to magnitude 14. The effort was carried on for decades, with more than twenty observatories splitting the work. Eventually, the USNO took up the effort, evolving into more modern efforts. The plates produced have been of use for comparison with recent efforts such as Hipparcos, for the study of proper motion

Further reading:
ACAC +79 3888 
CFSCFS 18398(or CF) Cape of Good Hope zone
GRWGRW +70 8247Greenwich zone