Potentialities of Yale Astrometric Materials

Astrometry with Objective Prism

“…Details of the measuring and reduction procedures are outlined elsewhere (Stock 1984). For our present purpose it is sufficient to recall that the Yale Zone Catalogue (Hoffleit 1967) served as the reference source. Our final catalogue contains positions with a mean error of about 0.2 areseconds, as well as magnitudes, spectral types, and approximate radial velocities for 10057 stars.…”