Save $40 on this 114mm push-to German Equatorial Newtonian telescope. It ships with a fully adjustable steel tripod, finderscope, 20mm and 10mm eyepieces. View Deal ...

The Emirates Astronomical Society (EAS) announced a new achievement, adding to the accomplishments of its member astrophotographers. Tamim Al Tamimi, a member of the Society, successfully observed and ...

Save $48 on this Newtonian reflector telescope. One of the best budget telescopes, we rated the Celestron StarSense Explorer DX 130AZ as the best overall for under $500. View Deal ...

Start exploring the night sky with our top picks for beginner-friendly telescopes. Tested for clarity, ease of use and build quality, these are our favorite models to learn astronomy.

Optical aberration theory remains a fundamental component in the design and operation of space telescopes. With increasingly ambitious astronomical missions and the demand for high-resolution ...

With Prime Day fast approaching on July 8-11, now's a good time to take a look at the best telescopes: Here are our picks of the best instruments for viewing the night sky.

When we were kids, it was a rite of passage to read the newly arrived Edmund catalog and dream of building our own telescope. One of our friends lived near a University, and they even had a summer … ...

This article was originally published with the title “Newtonian Telescope for Amateurs” in SA Supplements Vol. 7 No. 179supp (June 1879), p. 2848 doi:10.1038/scientificamerican06071879-2848supp ...

The Nikkor Z 180-600mm F5.6-6.3 VR ($1,899.95) is Nikon’s take on an affordable super telephoto zoom lens for photogs who want to capture images of wildlife, field sports, or other scenes where ...

Intensity interferometry is a promising technique that enables the precise measurement of spatial properties (i.e., distances, shapes and light properties) by probing fluctuations in the intensity ...

The authors derive a formula of linewidth for a semiconductor-optical-fiber ring laser by using coupled rate equations for the active and passive cavity. It is shown that the linewidth is not only the ...