It may be one of the most iconic sights in the night sky, but astronomers have never seen the Helix Nebula like this before.

Brainiac75] is a fan of fiber optic lamps, except for one thing—they’re often remarkably dim. Thus, they set out to hack the technology to deliver terrifying amounts of light while still ...

The XCEL 255's wide-field optics provide excellent clarity and detail. The compact design, combined with conveniently placed controls, make this slit lamp a pleasure to operate. The outstanding ...