This simple refracting telescope is still used in modern opera glasses, which are low-powered binoculars. |
A refracting telescope which has been freed from the effects of chromatic aberration is called achromatic. |
The Dominion Observatory building was completed in 1905 with the main instrument, the refracting telescope, observing for the first time on April 17th. |
The refracting telescope was cured of its inherent vices by British ingenuity. |
One of his first projects was to construct a refracting telescope. |
Though not the inventor, he was the first to construct a refracting telescope and apply it to astronomical research. |