Browse Items (278 total)

  • Collection: Carl O. Lampland

Franklin D. Roosevelt
Acting Secretary of the Navy Franklin D. Roosevelt's reply to a request by Senator Ashurst at Carl Lampland's behest for a copy of the American Practical Navigator, March 19, 1919

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Acting Secretary of the Navy Franklin D. Roosevelt's reply to a request by Senator Ashurst at COL's behest for a copy of the American Practical Navigator

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Blink Comparator
Letter from Carl Lampland to Carl Zeiss , November 17, 1919

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Order for a Stereo-Comparator with the Blink-Mikroskop in the largest size

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Blink Comparator
Letter from Carl Lampland to F. Y. Ferner (National Bureau of Standards), September 21, 1921

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Inquiry regarding description and manufacturer of the Blink-comparator (Carl Zeiss of Jena, Germany - 'Stereo-Komparator')

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Blink Comparator
Letter from Carl Lampland to Edward Fath (Goodsell Observatory), February 12, 1929

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New pieces of equipment at Lowell Observatory: Photographic objective (Cooke Astro type of lens) and the Blink Comparator

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Blink Comparator
Letter from Carl Lampland to Phillip Fox (Adler Planetarium), December 4, 1929

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The large Zeiss comparator being kept busy all the time on the examination of star fields taken with the new 13-inch photographic telescope

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Blink Comparator
Letter from Carl Lampland to Carl Zeiss , April 4, 1932

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Zeiss Blink Comparator used at Lowell in the discovery of Pluto in 1930; Request for complete descriptive literature of the instrument in its present form; Microscope objectives (apochromatic lenses) with corrections for colors throughout the…

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Blink Comparator
Lowell Observatory Library
Letter from Carl Lampland to Clyde Tombaugh, August 23, 1932

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Visit by the Royal Astronomical Society group to Lowell. Group was very disappointed in not meeting Clyde Tombaugh but did see the pair of discovery plates displayed in the Blink Comparator.

Latest activities in the Lowell Observatory Library to…

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Blink Comparator
"Want to discover Planet X? You'll need these three tools"
Article in Astronomy Magazine by Kevin Schindler, May 20, 2015

Want to discover Planet X.pdf
In 1911 Lampland suggests the purchase of a Zeiss Blink Comparator to aid in the search for Planet X.

Lampland modifies the apparatus to accommodate larger photographic plates.

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