Verwendung eines Interferenzverlauffilters für relative spektralphotometrische Messungen.

In the reported investigation a graded interference filter was used to simulate a spectrum scanner in the range of the Balmer discontinuity. An area scanner with rotating filter plate was employed in the experiments. The interference filter has a half width of 130 A and an operational spectral range from 3230 to 4840 A. Data obtained in an observation of the star HD 1280 are presented in a graph. The investigation shows that the magnitude and the position of the Balmer discontinuity can be determined on a relative basis with the approaches of photoelectric photometry.