SOLAR PHOTOGRAPHY IN EXTREME ULTRAVIOLET

Pinhole camera instrumentation has been carried on stabilized Skylark rockets to record images of the sun at extreme ultraviolet wavelengths. This paper describes the equipment used and the results obtained during five rocket flights between August 1964 and February 1966. The spectral sensitivity of the various cameras and the effects of atmospheric absorption are estimated in order to determine the effective wavebands which form the solar images. The extreme ultraviolet images are compared with observations of the sun made at visible wavelengths. © 1969 D. Reidel Publishing Company.