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 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 ...

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 ...

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 ...

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

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 ...

The smallest and most affordable smart telescope on sale, the Seestar S50 is no bigger ... a teardrop-shaped plastic chassis. There's no lens cap, but to protect it, the motorized arm parks ...

Getting a closer look at the Moon isn’t particularly difficult; even an absolute beginner can point a cheap telescope towards ... selecting the appropriate lens and getting it mated to the ...