Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 430
issometimes called the hour-circle,sometimes the right-ascension circle.At the extremity of the polar axisa sleeve is fastened, which carries the declination axis D,and to this declination axis is attached the telescope tubeT, and also the declination circle C. $41. The advantages of this mounting… … Fig. 147. The Equatorial (Schematic). 1 We may add that it must, of course, be mounted where it can bepointed directly at the stars, without any intervening window-glass be-tween it and the object. We have known purchasers of telescopes tocomplain bitterly-because they could not see Saturn well…
Astronomy · Constellations
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