OSC Gallery > Telescopes > Single-Draw > Dollond Single-Draw
Dollond Achromatic Night Telescope Draw
Signature | Dollond, London/ Achromatic Night | |||||
Date | Circa 1800 | |||||
Dimensions | English | Metric | ||||
Main Tube Length | 24.2in | 615mm | ||||
Main Tube Diameter | 2.6in | 67mm | ||||
Total Length | 39.0in | 990mm | ||||
Closed Length | 26.2in | 665mm | ||||
Objective Clear Aperture Diameter | 1.6in | 41mm | ||||
Description |
This telescope has a parallel brass barrel, covered in brown leather. The objective lens is an achromatic doublet, contained in a nickeled silver cell. The objective has an extendable sunshade. All metal parts are nickeled silver. It has a single draw, a four-lens eyepiece, and a bulbous eyecup. It is signed "Dollond London Achromatic Night" on the eye tube draw, with the eyecup to the right. There is a long-necked bird design below the signature. The creature is resting on a crown. This designation as a "night" telescope is quite rare; the eye tube is oversized allowing larger diameter optics to be used for better night vision. |
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