English: Engraving from "Smith's Illustrated Astronomy" from 1848 of the Cincinnati Observatorys 11 inch "Merz and Mahler" refracting telescope installed in 1843. It is described in the 1848 text as "The 2nd Telescope in size in the United States at the Cincinnati Observatory." It is believed to be the oldest professional telescope still in use in the Western Hemisphere[1].
Cover and inside:
"Smith's Illustrated Astronomy, Designed for the use of the Public Or Common Schools in the United States."
By ASA Smith
Second Edition
Published by Candy & Burgess
60 John Street
New York
1848.
Source
Smith's Illustrated Astronomy, Designed for the use of the Public Or Common Schools in the United States
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2006-10-17 00:48 Halfblue 1218×1800× (374726 bytes) "THE 2d TELESCOPE IN SIZE IN THE UNITED STATES AT THE CINCNNATI OBSERVATORY." Cover and inside illustration from: "Smith's Illustrated Astronomy, Designed for the use of the Public Or Common Schools in the United States." By ASA Smith Second Edition
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{{Information |Description={{en|Engraving from "''Smith's Illustrated Astronomy''" from 1848 of the en:Cincinnati Observatorys 11 inch "Merz and Mahler" en:refracting telescope installed in 1843. It is described in the 1848 text as "''The 2...