2 The observation program

The purpose of observations with PA II in San Juan is the improvement of the fundamental catalogue in southern hemisphere. The list of stars is selected from:

(a) FK5 fundamental stars (592 stars, 2 mag - 8 mag).

(b) FK4 Supp stars (657 stars, 2 mag - 8 mag).

(c) FK5 Ext stars (822 stars, 6 mag - 9.5 mag).

(d) SRS stars (1372 stars, 6 mag - 9.5 mag).

(e) IMF stars, that is Intermediate Fundamental Stars (1079 stars, 9 mag - 11.5 mag).

(f) CAMC4 stars (1080 stars, 9 mag - 11.5 mag).

(g) GC stars (354, 2 mag - 6 mag).

(h) Radio stars (82 stars, 2 mag - 11.5 mag).

(i) Some solar system objects.

There are about 6038 stars in the list. The magnitudes are from 2.0 to 11.5. The declinations are from $-3^\circ$ to $-60^\circ$, The positions of FK5, FK4 Supp., and FK5 Ext stars in J2000.0 are taken from FK5 Fundamental Catalogue and FK5 Extended Fundamental Catalogue provided by CDS. The positions of the Intermediate Fundamental Stars were provided by Dr. Thomas E. Corbin at U.S. Naval Observatory. These stars are selected from the Hipparcos Input Catalogue provided by CDS. The positions of the radio stars were taken from the literature (Walter 1990). The positions of GC stars were from the Chinese Geodetical Stars Catalogue (CGSC). The others were from CAMC4 and SRS catalogues. All the positions of stars have been reduced to the epoch and equinox J2000.0.