Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 592
g. 564 represents a Newtonian telescope mounted on an equatorialstand, and fig. 563 gives a horizontal section of it. This section shows howthe luminous rays reflected from the parabolic mirror M meet a small rect-angular prism, w, which replaces the inclined plane mirror used in the oldform of… … the telescope, and magnifying from 50 to 800 times according to the size ofthe silvered mirror. In reflectors the mirror acts as object-glass, but there is, of course, nochromatic aberration. The spherical aberration is corrected by the formgiven to the reflector, which is paraboloid, but slightly…
Physics
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
