16. Looking up from the eyepiece end of the 20 inch refractor. From left to right, one notices: the equatorial mount, locks and slow motion wheels for RA and Dec, the eyepiece assembly, a red safety light and small Dec circle peri-scope, counterweights, and the 5 inch Clark finder scope. Telescope in stow position, horizontal, aimed north. An aperture mask sits on the dome shelf.
REFERENCES USED IN COMPILING SOME OF THE FOREGOING HISTORY:
A Study of the Sky, by Herbert A. Howe; 1901, Chas. Scribner & Sons, NY (QB44.H86).
Elements of Descriptive Astronomy, by H. A. Howe;
The 20 inch Equatorial of the Chamberlin Observatory, H.A.Howe, 1894 in Astronomy and Astrophysics Vol. 8, p.709ff (forerunner of the Astrophysical Journal).
Astronomy for the Joneses, by Albert Recht,
Astronomy and Astrophysics National Historic Landmark Theme Study, by Harry Butowski, 1989, National Park Service Historic Division Monograph (QB82 B582 B98).
Chamberlin Observatory: Brochure printed on the occassion of the listing in the National Register of Historic Places, March 27, 1980.
From the Rockies to the World: A history of D.U. by Allen Breck, 1989, Hirschfeld Press, Denver.
Additional references, citing Chamberlin Observatory:
T.J.Bartlett, "Chamberlin Observatory Grows" 1950 Sky & Telescope vol.9, p.51ff.
H.S.King, The History of the Telescope, 1950s, Sky Publishing Corp.
Dimitroff, and Baker, J. Telescopes and Accessories, 1945 Saunders, Phila., part of Harvard series on Astronomy, eds. Shapley, Menzel.
D.J.Warner, Alvan Clark and Sons: Artists in Optics, 1968 Smithsonian Institution Press, US Nat�l Museum Bulletin 274 (USGPO). QB86 W26
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