Abstract
Eleven high-dispersion spectra of Venus, taken with blue Doppler shifts have enabled us to unmask the 7323.88 A forbidden line of Ca ii from terrestrial absorption. We obtain an equivalent width of 7.4±0.4 mA for this line in integrated sunlight. Our value of W λ is smaller than previous values and much more accurate. The HSRA solar model gives a solar calcium abundance of A Ca = 6.21.
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