OSC Gallery > Telescopes >Multiple-Draw > Dollond Three-Draw Telescope
Dollond Three-Draw Telescope
Signature | Dollond, London | |||||
Date | circa 1800 | |||||
Dimensions | English | Metric | ||||
Main Tube Length | 8.7in | 221mm | ||||
Main Tube Diameter | 1.8in | 45mm | ||||
Total Length | 28.3in | 718mm | ||||
Closed Length | 9.3in | 236mm | ||||
Objective Clear Aperture Diameter | 1.6in | 40mm | ||||
Description |
This telescope has a parallel mahogany barrel, painted brick red. The objective lens is an achromatic doublet and has a push-on brass cap. It has three brass draws, a four-lens eyepiece, and a flared eyecup with a swivel cover. The segmented eye tube is signed "Dollond, London" with the eyecup to the right. |
|||||
|
|
College of Optical Sciences
The University of Arizona, 1630 East University Boulevard, Tucson, Arizona
U.S.A. 85721-0094
All contents copyright © 2008 Arizona Board of Regents.