Abstract
In the hope of retrieving useful positions for proper motion determinations from the Carte du Ciel (CdC) using recently developed block adjustment methods, an area from the Oxford Zone I of the CdC consisting of 24 overlapping plates of relatively homogeneous epoch was reanalyzed. Positions for equinox 1950.0 and epoch 1901.1 were obtained for 2911 stars using independently both the AGK3 and the FK4 catalogues as reference systems. The results show that positions accurate to 0arcsec.3 may be obtained and that the block adjustment method used is capable of absorbing distortion terms which are a linear function of the coordinates.
