8-inch celestial globe
Date: 1924
Inventory Number: 1994-1-0010
Classification: Globe
Subject:
Maker: Rand McNally & Company (founded 1868)
Maker: Eastern Science Supply Company (fl. 1910s - 1940s)
Author: John C. Duncan (fl. 1924)
Author: Leah B. Allen (born 1884)
Cultural Region:
Dimensions:
28.7 × 27 × 27 cm (11 5/16 × 10 5/8 × 10 5/8 in.)
DescriptionThis 8-inch celestial globe shows the principal stars on a dark ochre background. Constellations are indicated by names, without figures or lines connecting the stars. Circles of declination and right ascension are shown, along with the tropics of Cancer and Capricorn, the celestial equator, the ecliptic, the poles of the ecliptic, the poles of the galaxy, and the galactic circle. The celestial equator is divided in hours 0-23, with subdivisions every 10 minutes. The ecliptic is divided 0-360° every 1° and into months and days. The stars are precessed for the epoch of 1950.
The gores meet at the equatorial poles.
The globe is held in a brass meridian ring divided on one half into latitudes 90°S- 0° - 90°N and on the other half into co-latitudes 0°-90-0°. At the north pole is an hour circle divided 1-12 twice.
The globe sits in a stand with a four legs and a pair of crossed stretchers. These support the bracket for the meridian ring. There is a horizon ring of metal attached to a wood ring. It is marked with the cardinal points of the compass and degrees of azimuth measured from due South 0°-360°.
The gores meet at the equatorial poles.
The globe is held in a brass meridian ring divided on one half into latitudes 90°S- 0° - 90°N and on the other half into co-latitudes 0°-90-0°. At the north pole is an hour circle divided 1-12 twice.
The globe sits in a stand with a four legs and a pair of crossed stretchers. These support the bracket for the meridian ring. There is a horizon ring of metal attached to a wood ring. It is marked with the cardinal points of the compass and degrees of azimuth measured from due South 0°-360°.
Signedon cartouche: By John C. Duncan, Professor of Astronomy / and / Leah B. Allen, Instructor in Astronomy / Wellesley College / Copyright 1924 by / Rand McNally & Company
below cartouche: Made in U. S. A.
on horizon ring: EASTERN SCIENCE SUPPLY CO. P. O. Box 1414, Boston, Mass., U. S. A.
below cartouche: Made in U. S. A.
on horizon ring: EASTERN SCIENCE SUPPLY CO. P. O. Box 1414, Boston, Mass., U. S. A.
Inscribedon cartouche: Duncan's Eight-inch / CELESTIAL GLOBE / Showing the positions of the principal / Stars and Circles of Reference for the / EPOCH OF 1950.0 / By John C. Duncan, Professor of Astronomy / and / Leah B. Allen, Instructor in Astronomy / Wellesley College / Copyright 1924 by / Rand McNally & Company
FunctionA video with information on the design and use of celestial globes, produced by Museo Galileo, is available on their website here.
ProvenanceGift of Barbara Welther, Harvard College Observatory, 1994.