The 76-cm (30-inch) refractor telescope that became operational in 1888 was at that time the world's largest telescope.

The Galileoscope is a small mass-produced refractor telescope, designed with the intention of increasing public interest in astronomy and science.

In 1791 he completed the Shuckburgh telescope, an equatorial mounted refractor telescope.

At the time of assembly, the refractor telescope was the fifth largest instrument of its kind in the United States.

His parents bought him a small 40mm refractor telescope and very soon, after hunting down the planet Saturn with it, he was hooked.

The lens is multicoated glass (although I think it has the look and feel of fluorite, which you'll find on expensive refractor telescopes).

An observatory complex houses 8- and 20-inch refractor telescopes (the bigger the telescope, the clearer the view) that were relocated from the center's former facility.

Fitz made the largest refractor telescopes in America, five different times.

It is the eighth largest refractor telescope in the United States.

The University purchased the observatory's refractor telescope in 1863.