Browse Items (1220 total)

The Lowell Observer, Spring 1990

6_Spring_90.pdf
The Lowell Observer, Spring 1990, Issue 6

Observations of Mars canal Sirenius

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Observations of Martian canal Sirenius, December 1896 to March 1897

Russia/Soviet Union
Purge of Russian astronomers during the Stalin Regime
Excerpt from "Biographical Encyclopedia of Astronomers" by Katherine Haramundamis

Boris Gerasimovich.pdf
Brief biography of Boris Petrovich Gerasimovich, one of the many Russian astronomers executed during the Stalin Regime purge of the staff at Pulkovo Observatory (1936-1938).

PbS Cell

0324.tif
Lead Sulfide photocell

Prism Eyepiece

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Spectrum producing eyepiece with 3 interchangeable dispersal elements

Schmidt Camera film holder

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Spherical ground glass film holder for Cogshall Schmidt camera

The Death of Percival Lowell
Letter from George R. Agassiz to Carl Lampland, November 16, 1916

l_COL_242.jpg
Article Agassiz wrote in the Boston Transcript regarding the death of Dr. Lowell

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Stencil

0018.tif
Brass painting stencil

Clark Telescope Drawings

Clark Telescope Drawings.pdf
Various original drawings of the 24-inch Clark Telescope by Alvan Clark & Sons