Solar Limb Gradient from Eclipse Spectra of February 15, 1961

Abstract

On the occasion of the total solar eclipse of February 15, 1961 two spectrograms contain a smooth transition of the photospheric spectrum into the chromospheric one and vice versa. Continual registration has been achieved by means of a moving plate combined with a slit spectrograph. The method adopted, and a description of the spectrograph and the chromospheric spetrophotometric results obtained have been published (Kubicela, 1968). In this study the 1961 eclipse data have been used to find the intensity of solar continuum radiation dependent on heliocentric heights within the last second of apparent solar radius.