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Collection Home > Telescopes >Reverse Taper > Octagonal Reverse Taper Telescope
Decagonal Reverse Taper Telescope
| Signature | Dollond, London |
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| Date | Late 1700s | |||||
| Dimensions | English | Metric | ||||
| Main Tube Length | 23.9in | 607mm | ||||
| Main Tube Diameter (objective end) | 1.5in | 38mm | ||||
| Main Tube Diameter (eyepiece end) | 1.7in | 42mm | ||||
| Total Length | 33.0in | 838mm | ||||
| Closed Length | 25.0in | 635mm | ||||
| Objective Diameter | 0.9in | 24mm | ||||
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Description |
This telescope has a decagonal mahogany barrel, painted dark red. It has a very slight reverse taper - the objective end of the barrel is smaller than the eye-tube end. The objective lens is an achromatic doublet with a push-on lens cap. It has a single brass segmented draw (without retention), a five lens eyepiece, and a flared eyecup with a swivel cover. It is signed "Dollond London" on the draw, with the eyecup to the right. It is very unusual for an achromatic telescope to have a reverse taper. | |||||
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