Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 357
Stars and Telescopes his telescope to the heavens, he saw that this appear-ance is produced by millions of stars apparently scat-maintained by Mrs Draper, have enabled Professor Pickeringand his efficient corps to prosecute an unparalleled line of in-vestigations embracing the stars of both… … HENRY DRAPER (1837-1882) axis. For the furtherance of this work Mrs 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
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