Browse Items (278 total)

Lampland, Carl O., Blink Comparator Letter from Carl Lampland to F. Y. Ferner (National Bureau of Standards), September 21, 1921, 1921-09-21

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

Tags: Pluto

Lampland, Carl O., Blink Comparator Letter from Carl Lampland to Edward Fath (Goodsell Observatory), February 12, 1929, 1929-02-12

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

Tags: Pluto

Lampland, Carl O., Blink Comparator Letter from Carl Lampland to Phillip Fox (Adler Planetarium), December 4, 1929, 1929-12-04

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

Tags: Pluto

Lampland, Carl, Blink Comparator Letter from Carl Lampland to Carl Zeiss , April 4, 1932, 1932-04-04

Zeiss Blink Comparator used at Lowell in the discovery of Pluto in 1930; Request for complete descriptive literature of the instrument in its present…

Tags: Pluto

Lowell, Constance S., Discovery of Pluto Lowell Prize at the Normal School (Northern Arizona University) Letter from Constance Lowell (Mrs. Percival) to Carl Lampland, March 9, 1930, 1930-03-09

Roger Putnam has written Mrs. Lowell about the observation of what may be Planet X and if she has any thoughts about the naming thereof.

Plans for…

Tags: Lowell, Pluto

Lampland, Carl O., Asteroid positions Letter from Carl Lampland to Herman Kobold, August 25, 1932., 1932-08-25

Asteroid positions from the survey work with Lowell Observatory's new 13-inch telescope. Asteroid trails were noted by C.W. Tombaugh in the course of…

Tags: Astronomy

Lampland, Carl O., Asteroid positions Letter from Carl Lampland to A. Kopff, March 16, 1933, 1933-03-16

Measurement of minor planets and asteroids to be published in Astronomische Nachrichten. Abbe Lemaître of Louvain, Belgium is considering the…

Tags: Astronomy

Lampland, Carl O., Asteroid Positions Lowell Observatory Personnel Updates Letter from Carl Lampland to Clyde Tombaugh, November 15, 1934, 1934-11-15

General news from Lowell: Frank Edmondson's upcoming marriage, David Slipher's marriage and new job in New York City, visit from Esther Tombaugh and…

Tags: Astronomy, Lowell

Lampland, Carl O., Asteroid Positions Letter from Carl Lampland to Clyde Tombaugh, March 18, 1935, 1935-03-18

Asteroids in the news; Requests for precision determinations for the revision of orbital elements of asteroids; Recent request from the Institut…

Tags: Astronomy

Lampland, Carl O., Blink Comparator Lowell Observatory Library Letter from Carl Lampland to Clyde Tombaugh, August 23, 1932, 1932-08-23

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…

Tags: Lowell, Pluto