Address for the latest beta version of Astrometrica is http://www.astrometrica.at/Beta/Astrometrica.zip This includes access to the UCAC-4 catalogue. Regards Roger Dymock Email: roger.dymock at ntlworld.com Tel: 023 92647986 Skype: rjvdymock MPC Observatory Code: 940 Project Alcock http://www.britastro.org/projectalcock/