Electron microscopes are used to magnify very small objects, such as cells and molecules. They do not use lenses or mirrors to collect light, so they are not considered telescopes.

The Gran Telescopio Canarias is the largest optical telescope in the world, with a primary mirror diameter of 10.4 meters.

Radio telescopes are used to detect radio waves from space. They are typically large and dish-shaped, and they use a parabolic reflector to focus radio waves onto a receiver.

The Hubble Space Telescope was launched in 1990 and is still in operation today. It is a reflecting telescope with a primary mirror diameter of 2.4 meters.

Electron microscopes are used to magnify very small objects, such as cells and molecules. They do not detect light, so they are not considered astronomical detectors.

Interferometry is a technique that is used to combine the light from multiple telescopes to create a single image. This can be done by using a variety of methods, such as Michelson interferometry and Fabry-Perot interferometry.

Electron microscopy is used to magnify very small objects, such as cells and molecules. It does not involve the study of light, so it is not considered astronomical spectroscopy.

Parallax is a technique that is used to measure the distance to a star or galaxy. It involves measuring the apparent shift in the position of an object as seen from two different locations.

Electron microscopy is used to magnify very small objects, such as cells and molecules. It does not involve the study of light, so it is not considered astronomical imaging.

Spectroscopy is a technique that is used to study the chemical composition of a star or galaxy. It involves splitting the light from an object into its component wavelengths and then analyzing the resulting spectrum.

Electron microscopy is used to magnify very small objects, such as cells and molecules. It does not involve the study of light, so it is not considered astronomical polarimetry.

Magnetometry is a technique that is used to study the magnetic field of a star or galaxy. It involves measuring the strength and direction of the magnetic field.

Electron microscopy is used to magnify very small objects, such as cells and molecules. It does not involve the study of light, so it is not considered astronomical interferometry.

Gravitational wave astronomy is a technique that is used to study the gravitational waves. It involves detecting the ripples in spacetime that are caused by the acceleration of massive objects.