Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on ...

As the clocks go forward this weekend, the FT’s senior graphics artist walks a fine (meridian) line through the birthplace of GMT in its 350th-anniversary year ...

The first telescopes used lenses, known as refracting telescopes ... "Once we optimized the design of the lens' microstructures, the manufacturing process involved required very stringent process ...

The first telescopes used lenses, known as refracting telescopes ... "Once we optimized the design of the lens' microstructures, the manufacturing process involved required very stringent process ...

Refractor telescopes are known for their sharp, high-contrast images. The Sky-Watcher Evostar 100ED stands out due to its apochromatic design, reducing color distortion. It’s perfect for planetary ...

Learn more › While standard telescopes are certainly cool devices, there is no shame in preferring a telescope for beginners if you’re just starting. Telescopes have multiple moving parts ...

Chinese scientists are working to set up the world's largest refracting telescope in Tibet Autonomous Region for observing stars and planets. Deputy Director of the regional department of science and ...

The latest offering in William Optics’ Cat line is the RedCat 91 refractor. It is a five-element Petzval design including three super extra-low dispersion lenses and an internal focus design.

Reflecting telescopes generally take longer than refractors (lens-based scopes) to adjust to temperature change, and it would often take a half hour or more of acclimation for the scope to achieve the ...