Publisher's Synopsis
Excerpt from A Plea for Reflectors: Being a Description of the New Astronomical Telescopes With Silvered-Glass Specula; And Instructions for Adjusting and Using Them
In one part of the heavens in the constellation of Gemini, where seven stars are visible to the naked eye, the same space is represented, on a telescopic star map constructed by M. Chacornac, as containing stars, and these were seen with a telescope of only six inches aperture.
Sir William Herschel estimated the number of stars in the bright zone, known as the milky way, at eighteen millions, and Chacornac considers this estimate far too small.
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