The CATS database to operate with astrophysical catalogs
  A public database of astrophysical (radio and other) catalogs (CATS), has been created at Special Astrophysical Observatory (SAO). It allows to execute a number of operations in batch or interactive mode, e.g. to obtain a list and parameters of catalogs, to extract objects from one or several catalogs by various selection criteria, perform cross-identification of different catalogs, or construct radio spectra of selected sources. Access to CATS is provided in both dialog mode (non-graphics), and graphics mode (hypertext, via Tcl/Tk or possibly JAVA in future). The result of CATS operation can be sent to the user in tabular and graphical formats. 
Oleg V. Verkhodanov (1), Sergei A. Trushkin (1), Heinz Andernach (2)   and Vladimir N. Chernenkov (1) ((1) Special Astrophys...