Day or night telescope

This achromatic telescope has a wooden barrel and two brass draw tubes. The other brass fittings include a sliding eyepiece cover, an objective lens cap with a sliding cover and a sliding sun shade. An inscription on the smallest draw tube names the maker and telescope type - 'Ramsden London. Day or Night'. In addition, 'VII' in roman numerals is roughly inscribed inside the eyepiece assembly, presumably as part of the manufacturing process.

Object Details

ID: ZBA5914
Type: Day or night telescope
Display location: Not on display
Creator: Ramsden, Jesse
Date made: circa 1800
Credit: National Maritime Museum, Greenwich, London
Measurements: Length: 380 (closed); 915 (fully extended); Diameter: 63 (barrel); 65 (max)