Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 230
noticed in the corona at other times, are espe-cially prominent. Fig. 226 shows the corona of i860 as it was observedby Temple, Fig, 227 shows the corona of 1867. This is interestingas being a corona at the time of sun-spot minimum, ASTRONOMY. 207 Fig. 228 represents the corona of 1868. This is a… … Fig. 227. Fig. 232 shows the same corona as photographed byDavis. Fig- 233 shows the corona of 1878 made up from severalviews as combined by Professor Young. 204. The Spectrum of the Corona. — The chief line in thespectrum of the corona is the one usually designated as 1474,and now known as the…
Astronomy
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