An astronomical mirror, also known as a telescope mirror or primary mirror, is a key component of a reflecting telescope. It serves as the primary optical element responsible for gathering and focusing light from distant astronomical objects, such...

An astronomical telescope is a type of optical instrument designed to gather and magnify light from distant celestial...

Two stars so close together that they cannot be resolved by telescopes. They are proved to be double stars by the doubling...

A device used for the comparison of spectra used, in turn, for the comparison of elements, such as the absorption lines in...

The length of the small space within which the atmosphere exhibits coherence, particularly in relation to an observer on...

A camera designed to record astronomical objects (e.g., stars, planets, nebulae, galaxies) and their spectra.

A pair of stars (double star) that can be seen separately with a telescope, generally by setting a filar micrometer for the...

A telescope stand equipped with a polar axis that can be set parallel to the Earth's axis of rotation and a declination axis...

In physics, nuclear fusion refers to the process in which two atomic nuclei come together to form a heavier nucleus,...

Inertial fusion energy (IFE) refers to a proposed method of generating electricity by harnessing the energy released from...

An emission spectrum is a graphical representation or a characteristic pattern of the wavelengths or frequencies of light...

The base used to hold an astronomical telescope. It may be either altazimuth, with horizontal and vertical axes of rotation,...

An astronomical scanning technique for capturing images of stars without moving the sensor. To perform a drift scan, a CCD...

A coarse diffraction grating that is used to form a scale of intensities to determine the relative magnitudes of stars. The...

A telescope that is fixed or has a limited degree of movement in a vertical plane; primarily used to determine the position...

Inertial confinement fusion (ICF) is a method of achieving nuclear fusion, a process where two atomic nuclei combine to...

A telescope lens is a primary optical component of a telescope system that gathers and focuses light to form an image. It is...

Sharp and narrow absorption lines found in the spectra of stars. They result from the absorption of a part of a star's...

An interferometer constructed to be positioned on a telescope to measure the angular separation of the components of double...