Dollond London 1920 Heavy Brass 16" Round Engraved Spyglass Box Telescope

Item No :- TC 017

Weight :- 740 grams (approx)

Size :- 42 cm while fully extended (approx)

Description :- Classy antique heavy quality beautiful 16" approx (42 cm) Original Dollond London 1920 Marine Rounded Telescope in the vintage spyglass style. The telescope has ground glass optics and produces a sharp image; it focused by altering the length of the telescope by pushing and pulling. A treasure that is sure to impress the most distinguishing telescope collector. Magnification is 24X and is designed keeping in view the requirements of a nautical scope - I.e., greater field of view. More the magnification, less expansive is the field of view and for a nautical scope this 24 specification coupled with the 30 mm lens gives the best combination of steadiness and field of view with satisfactory magnification. Please note that this is designed as a terrestrial scope and not advised for astronomical observations, although it does make the moon look rather nice! 

Short History:- A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, using glass lenses. They found use in terrestrial applications and astronomy. Within a few decades, the reflecting telescope was invented, which used mirrors. In the 20th century many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s.