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On the power of penetrating into space by telescopes; : with a comparative determination of the extent of that power in natural vision, and in telescopes of various sizes and constructions; illustrated by select observations
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Astronomical observations and experiments, selected for the purpose of ascertaining the relative distances of clusters of stars, and of investigating how far the power of our telescopes may be expected to reach into space, when directed to ambiguous celestial objects
Rare Books
487000:0119:66
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Observations of the changeable brightness of the satellites of Jupiter, and of the variation in their apparent magnitudes; : with a determination of the time of their rotatory motions on their axes. To which is added, a measure of the diameter of the second satellite, and an estimate of the comparative size of all the four
Rare Books
487000:0119:36
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Investigation of the powers of the prismatic colours to heat and illuminate objects; : with remarks, that prove the different refrangibility of radiant heat. To which is added, an inquiry into the method of viewing the sun advantageously, with telescopes of large apertures and high magnifying powers
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487000:0119:40