The next partial eclipse will happen in the early hours of March 29, with it being visible mostly in the northeast starting ...

Scientists have developed an impossibly thin telescope lens that addresses a key astronomical challenge in a new study funded ...

The dream of a flat, lightweight telescope lens, where microscopic etchings precisely refract different wavelengths of light, ...

New results from the CHIME telescope support the hypothesis that fast radio bursts originate in close proximity to the turbulent magnetosphere of a central engine.

and that this could be overcome by making lenses with longer focal length, resulting in monsters like Hevelius's 45-metre-long telescope in Danzig. Two key inventions enabled astronomers to ...

Save $61 on a budget-friendly beginner telescope that offers good lunar and planetary views thanks to a 4-inch / 100 mm aperture and a 660mm focal length. Get started straight away because it ...

The focal length of the telephoto lens is equivalent to 737mm, which isn't as powerful as traditional telescopes selling for the same price. Still, the built-in photography functions make up some ...

the lens' focal length. The only caveat with this setup is that it introduces more glass, so it could reduce the image clarity. The next option is to use a telescope. We've thoroughly tested ...

BRAZIL : Glass positive photograph of the corona, taken at Sobral in Brazil, with a telescope of 4 ... More inches in aperture and 19 feet focal length. The expedition, organised by physicist Sir ...

Why? The most common reason is that magnification capability doesn’t match with the telescope’s objective size. In detail, it’s the objective focal length (FL or F). The bigger the objective size, the ...

Cutting-edge UK research is benefiting the European Space Agency's Euclid mission, with new data released today (19 March) ...