General purpose extremely large aperture optical/infrared telescope.

The European Extremely Large Telescope will be the world’s biggest eye on the sky.

General purpose extremely large aperture optical/infrared telescope.

Refractor Telescope – This is a type of optical telescope that uses a lens to form an image.

Upon completion, the Giant Magellan Telescope (GMT) will be the largest optical telescope in the world

World's largest optical telescope gets construction approval

Hysteroscopy is a small optical telescope that looks for uterine abnormalities.

Image inversion analysis of the HST OTA (Hubble Space Telescope Optical Telescope Assembly), phase A. Final Technical Report.

Image inversion analysis of the HST OTA (Hubble Space Telescope Optical Telescope Assembly), phase A (Technical report).

Therefore, they suggest to look for it with a radio or submillimetre telescope instead of an optical telescope.

Near-infrared observations of supernovae with the Nordic Optical Telescope

The view through an optical telescope won't be so impressive.

The view through an optical telescope won’t be so impressive.

The observatory also holds the world’s largest single aperture optical telescope

Both optical and radio telescopes collect energy in the form of electromagnetic radiation.