Variable neutral density filters are very useful for photographers that like manual control in bright light. Instead of paying hundreds of dollars for one, though, you can make your own from just a ...

(Santa Barbara, Calif.) - For the first time, a team of international researchers has found a way to view the accretion disks surrounding black holes and verify that their true electromagnetic spectra ...

NASA’s Nancy Grace Roman Space Telescope will be able to explore even more cosmic questions, thanks to a new near-infrared filter. The upgrade will allow the observatory to see longer wavelengths of ...

Techniques for mitigating the effects of moonlight on lunar observation include using neutral density or polarizing filters, high magnification, or aperture masks to reduce light intensity. Utilizing ...

There are plenty of obscure Chinese brands vying for attention (and sales) across the world’s online stores. Neewer has become relatively well-known and trusted as a maker of good-quality, affordable ...