X-ray emission from five regions of coronal condensation formed images in a pinhole camera. Three of these regions were on the limb of the Sun and were found to be 2.2 + 0.3 >< 1O km above the photosphere Intensity profiles, across the most intense X-ray regions, were obtained with an angular resolution of about O!5 and with coarse spectral separation.
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A. L. Broadfoot (1967) studied this question.