A Revised Analysis of the Solar Spectrum from 2990 TO 2635 A.

New solar spectra from 2990 to 2635 A, obtained from spectrographs flown in rockets on February 9, 1950, September 3, 1952, and December 15,1952, are presented and analyzed. Lines as close as 0.3 A were observed. Nearly 500 lines are recorded and are attributed to 1054 atomic lines. The detailed spectral-intensity distribution-curve is presented instead of the customary visual-intensity estimates. The effect of instrumental blending is illustrated by comparing a long-wave-length region of the rocket spectrum with the high-resolution Utrecht Atlas curve, after averaging the latter over appropriate wavelength intervals.