Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Brown, Green, Longmans, and Roberts · leaf 87
THE STARS IMMENSE. when seen near the horizon, and the constellations, instead of preserving the same appearances and dimensions during their whole diurnal course, would appear to enlarge as they rise higher in the sky, as we see a small cloud in the horizon swell into a great overshadowing canopy… … a spectator S, under the visual angles a S b, A S B. No such change of apparent dimension, however, is observed. The nicest measurements of the apparent angular distance of any two stars inter se, taken in any parts of their diurnal course, (after allowing for the unequal effects of refraction, or…
Astronomy
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