Lessons in astronomy including uranography. A brief intoductory course without mathematics (1896)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston, London, Ginn and company · leaf 248
hy of Comets.— It is now possible to photo-graph comets, and the photographs bring out numerous pecu-liarities and details which are not visible to the eye even withtelescopic aid. This is especially the case in the comets tail.Fig. 66* is from a photograph of Kordames comet of 1893,for which we… … COMET RORDAME, JULY 13, 1893.Photographed by W. J. Hussey, at the Lick Observatory. § 314*] PHOTOGRAPHY OF COMETS. 237 exposure are drawn out into parallel streaks, the little irregu-larities being due to faults of the clock-work and vibrationsof the telescope. The knots and streamers which…
Astronomy
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