The world's largest refractory type telescope

• The world's largest refractory type telescope

This telescope was never used for its intended purpose. But it remains hidden in boxes somewhere in the depths of the Paris Observatory. Here is the sad story of the most ambitious astronomical project late XIX-th century.

The world's largest refractory type telescope

Construction of the Great Paris Exhibition Telescope began in 1892, immediately after the French government announced the upcoming Paris show in 1900. The diameter of its two lenses is 1, 25 meters, which is a record to this day.

The world's largest refractory type telescope

In the meantime, the focal length of the telescope was 57 m and its total length - 60 meters.

The world's largest refractory type telescope

The dimensions and weight of the telescope is not allowed to place it in no other way, except horizontally.

The world's largest refractory type telescope

Alas, it turned out to be virtually unusable telescope for astronomical research. It has been used only a few times to take pictures of the moon and a few sketches of nebulae. As a result, the company has created a telescope went bankrupt and unable to find a buyer for its elaborate. The telescope itself was dismantled and in the bowels of the Paris Observatory, there were only a few of its parts.