New optical technologies have revolutionized astronomy, from the invention of the telescope 400 years ago to more recent developments of adaptive optics and segmented mirrors. The next disruptive ...

Place those lenses in a tube and voilà, you have a spyglass ... Despite myriad embellishments, however, most optical telescopes in use in the 21st century derive from the two types developed ...

[Bill Hammack] elaborates on one such piece of engineering: The Alignment Optical Telescope. The telescope was used to find the position of the Lunar Module in space so that its guidance computer ...

NASA’s Nancy Grace Roman Space Telescope is one giant step closer to unlocking the mysteries of the universe. The mission has now received its final major delivery: the Optical Telescope Assembly, ...

Note that you can control this telescope only with its controller, so you should be comfortable pressing buttons and reading a small screen instead of pushing the optical tube into position.

Are monoculars suitable for astronomy? The simple answer is yes, but with a few limitations that you should be aware of ...

Lippershey then experimented with lenses in a tube and settled on a design which combined a concave lens and a convex ...