Abstract
SOLAR OBSERVATIONS AT THE R. OSSERVATORIO DEL COLLEGIO ROMANO.—Prof. Tacchini, in the Memorie della Società degli Spetiroscopisti Italiani, gives a tabular statement of the prominences, faculæ, and spots visible on the sun's surface during the first three months of the present year. Taking the case of the number of prominences, no less than 300 were observed during this period, 161 appearng in northern and 139 in southern latitudes. During the first two months prominences were more numerable in the south hemisphere, amounting to an excess of 7 and 5 respectively, but in March as many as 78 were recorded for the northern as against 44 for the southern. The latitudes for the regions of greatest frequency were + 40° + 30° and – 20° – 30°.
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Our Astronomical Column. Nature 46, 334 (1892). https://doi.org/10.1038/046334a0
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DOI: https://doi.org/10.1038/046334a0