Refracting telescopes dominated the nineteenth century, with the size of apertures rising to reach the physical limits for lens manufacture ... sky coverage by use of laser 'guide stars ...

The ELT is leaping toward the stars, quite literally — its massive dome, once skeletal, is now clad in protective armor, ...

However, making telescopes that can peek deep into the cosmos is an incredibly technical and expensive task—but thanks to new research, that could change. Here's how an innovative flat lens ...

Filipino scientists have discovered a simple, affordable way to make dynamically adjustable water-based lenses that have a ...

Engineers and astronomers at the University of Utah have designed a unique new kind of telescope lens: a flat lens with microscopic etchings to refract light. If the concept can be scaled up ...

A piece of worn paint caused a laser that tracks the ... it a new camera and some corrective lenses. Over time, astronauts added other instruments to the telescope, but they all had to account ...

A laser filter unit protects the observer ... to virtually eliminate detection from returned glint off the scope’s objective lens. The M151 is also fielded with a threadable night vision adaptor ...

This enables physicians to remove and replace the lens ... Scope, Alcon says that more than 5 million cataract procedures now take place in the US annually, with approximately 32 million worldwide - ...

The space telescope's image of a odd-looking spiral galaxy is, in reality, two distant galaxies overlapping each other.

When ground-based telescopes view stars ... astronomers began thinking about using a laser to make their own “star.” Today, laser guide stars are an essential part of any adaptive optics ...

Introduction of the femtosecond laser into cataract surgery may further the safety and predictability of this procedure. In addition, innovations in intraocular lens material have enabled the ...