Automatic Classification of Objective Prism Spectra

Abstract

Abstract. Methodological problems and hardware/software requirements of efficient automatic clas sification of objective prism stellar spectra are described on the basis of experience from 'microphotometer-computer' classification. Significant advances in hardware (two-dimensional scanners, on-line computers) as well as in software (image processing techniques) have now brought high-speed, exhaustive, automatic classification within reach. Some astronomical implications of automatic spectral surveys are discussed.