Cordoba Survey
The Cordoba Survey (CoD) is a visual survey of southern stars between −22 ° and −89 ° declination . It was carried out from 1892 to 1914 at the Córdoba observatory ( Argentina ). The Córdoba survey includes positions and brightnesses up to 10.0 mag of around 578,000 stars and is an extension of the Bonn survey to the sky south of the declination zone −22 °. The first four volumes were published in the Resultados del Observatorio Nacional Argentino series by John Macon Thomé between 1892 and 1914, the fifth by Charles Dillon Perrine in 1932.
An Alvan Clark & Sons refractor with an aperture of 12.5 cm and a focal length of 1.68 meters was used for the Córdoba survey . The magnification was 15 times.