Browse Items (90 total)

  • Tags: Visualizing Data
Central Park with Majestic Hotel & Dakota Ap. N.Y. City. A bridge over the lake in Central Park. Color Print. Stamped and Franked.. Sent to New York
This watch was presented to E. E. Barnard upon his discovery, in 1892, of Amalthea, the fifth and first non-Galilean, moon of Jupiter. The gift was from Frank H. McConnell, watchmaker and jeweler of San Francisco.
A sextant is used to determine the angle between an astronomical object and the horizon and was used by sailors for celestial navigation. The angle, combined with the time it was measured, was used to calculate position on a chart.
There is some dispute about early telescopes, but they were probably invented in the early 17th century. Galileo built one in 1609 and was the first to point a telescope at the skies. In the beginning they were cumbersome, but soon nautical…
Until the mid-18th century, sailors traveling out of sight of land had few ways of measuring their longitude. It could be done if the ship could know the time difference between local time and some set standard. The chronomer allowed for the accurate…
The stellar spectroscope is from the Garland Collection and is currently being held by the Dyer Observatory. It is constructed with multiple prisms to allow one to visually observe the spectrum of the stars.
An altazimuth is a telescope designed to measure the altitude and azimuth of a star in order to fix its position in the night sky. The instrument is designed to move vertically to measure altitude (height), and to move horizontally to measure the…
This book on the moon's rotation includes information about astronomical models.
This book describes the astronomical, and hence, calendrical, understanding of the Maya.
In 1577, Tycho Brahe, the Dane, witnessed a comet. Brahe was one of the last great naked-eye observers of celestial objects and one of the first to understand the necessity of rigorous scheduling and documenting of observations. He also argued that…
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