The stronger the magnification, the more the lens must curve to focus light properly. While this isn’t an issue for small cameras or backyard telescopes, astronomical lenses must be massive to ...

The new 100-millimeter (3.9-inch) diameter lens, which has a 200 mm (7.8 in) focal length, is just 2.4 micrometers thick. Optimized for the 400 to 800 nm wavelength range for visible light, this ...

How can you fairly compare one telescope to another? It's all in the (angular) resolution. The entire point of introducing ...

Credit: Vaonis The Hestia is an interesting example of telescope and optical construction. When I first unpacked the unit, I thought I was looking at a large iPad with a lens on one side.

Euclid, a European space telescope, just captured 26 million galaxies to reveal the secrets of the dark universe.

Get a huge discount on the Celestron StarSense Explorer LT 80AZ telescope in time for the upcoming Lyrid meteor shower, full ...