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An optical telescope is a telescope that gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors.
Telescope, device used to form magnified images of distant objects. The telescope is undoubtedly the most important investigative tool in astronomy. It provides a means of collecting and analyzing radiation from celestial objects, even those in the far reaches of the universe.
Telescopes Astronomers observe distant cosmic objects using telescopes that employ mirrors and lenses to gather and focus light. The size of the main mirror or lens determines how well a telescope can collect light. The larger a mirror or lens, the more light it collects, and the better its ability to detect fainter objects. Refracting […]
Optical telescopes help photographers, stargazers and astronomers spot the details of an object too distant to see in detail with the naked eye. According to Plotner, optical telescopes come in three varieties: refractor telescopes that use lenses, reflector telescopes that use mirrors and catadioptric telescopes that use mirrors with a lens ...
Eyepieces are used to magnify the image focused by the main mirror or lens. There are three basic types of telescope: reflectors, refractors and catadioptric, but how do you which type is the...
By doing this, you’ll learn what’s important to observers when they use a telescope. You’ll get a feel for optical and mechanical quality, ease of use (including portability), extra features ...
Expert picks for the best telescopes for every budget, including the high-end Celestron CGX-L 1400 EdgeHD Computerized Telescope.
Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.
We’ve tested 14 top-rated telescopes over the years, and we’re certain the Celestron NexStar 5SE provides the best functionality for a dedicated beginner.
The largest optical telescopes today have a mirror with a diameter of about 10 meters, though some can increase its overall light gathering area by employing multiple mirrors of up to 10 meters. The two important properties of a telescope are light-gathering power (light bucket) and resolving power.