* Binoculars: Binoculars are a pair of telescopes that are used with both eyes. Binoculars provide a wider field of view than telescopes and are easier to use for observing objects that are moving.
* Spectroscope: A spectroscope is an instrument that separates light into its component wavelengths. This allows us to study the chemical composition of stars and other objects in space.
* Radio telescope: A radio telescope is a telescope that uses radio waves to observe objects in space. Radio telescopes can be used to study objects that are not visible to optical telescopes, such as black holes and gas clouds.
* X-ray telescope: An X-ray telescope is a telescope that uses X-rays to observe objects in space. X-ray telescopes can be used to study objects that are hot and emit X-rays, such as supernovae and black holes.
* Gamma-ray telescope: A gamma-ray telescope is a telescope that uses gamma rays to observe objects in space. Gamma-ray telescopes can be used to study objects that are very energetic, such as pulsars and quasars.