Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 351
98 Stars and Telescopes his telescope to the heavens, he saw that this appear-ance is produced by millions of stars apparently scat-maintained oy M Draper, have enabled Professor Pickeringand his efficient corps to prosecute an unparalleled line of in-vestigations embracing the stars of both… … HENRY DRAPER (1S37-1S82) axis. For the furtherance of this work M™ Draper providedan exact duplicate of this instrument. Also, both are equippedwith great prisms (not shown), mounted in front of the objec-tives, thereby spreading out the stellar images into lines on thephotographic plate, instead…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
