Note: The before price has spiked to make it look like a bigger deal than it really is, the price you pay is still reasonable but, it has been on sale ... telescope that features a 127mm objective ...

This inexpensive small refractor comes with a bolt-on camera and app for taking images of the moon and sun, but it's no smart ...

To reduce distortions such as elongations and blurriness caused by the curvature of the "objective" lens—the convex lens at the far end of the telescope—Galileo ground a lens larger than he ...

This telescope is equipped with a 50mm objective lens and 12x magnification ... detail with a high-definition monocular telescope on sale for $39.97 through September 29.

Save 29% on this lightweight, portable Celestron telescope which is perfect for beginners. It comes with a large 70mm objective lens as well as a bonus bag, tripod, moon filter, Bluetooth shutter ...

In a refracting telescope, light enters through the eyepiece lens and is bent as it passes through the objective lens in the body of the telescope. In refractor telescopes, the telescope lens is ...

They differ in terms of glass type, cost, and index of refraction. Condenser lenses are higher-power objective lenses that increase illumination and resolution. These microscope lenses and objectives ...

This wouldn't be a typical telescope. It wouldn't even come with a lens. But it would be by far the most powerful telescope we'd ever built. This telescope would use the sun itself. To give some ...

The best binoculars for stargazing need high magnification and large, light-hungry objective lenses — check out ... of binoculars over one of the best telescopes is their generalist use and ...

In times like these, we all need to look beyond ourselves. This project might help: OnStep is an open-source telescope controller, a device that controls a telescope to point at something ...

Explore these orbiting pioneers and learn what they've discovered. 3 min read The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Viltrox has just told us that a Sony E-mount version of its Viltrox AF 40mm f/2.5 lens is now ...