Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 449
passed through the prism. 42G STARGAZIX(J : PAST AND IliKSKXT. [HfM)K VI. and by means of the object-glass was brought to a focusin front of the eyepiece, so that the spectrum of the starwas seen in the place of the star itself This system has recently been re-invented, and theaccompanying woodcut,… … Fi(!. Un. —< >l>ject-glass Prism. the telescope has to be pointed away from the objectat an angle depending upon the angle of the prism. In the other arrano;ement we have the thinor managedin a different way : we have the object-glass collectingthe light from the star and bringing it to a…
Astronomy · Telescopes
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
