An aperture mask is a simple device for easier observing that increases the effective focal ratio of a telescope.

Want to observe the sun or watch the next solar eclipse in safety? We've rounded up the telescopes you need to see our ...

The Butterfly Nebula: The image showcases wing-like structures of hot gas spewing from a dying star. The Butterfly Nebula is about 2,500–3,800 light-years away from us. The Stingray Nebula: It ...

In fact, our review states, “The Bravia 8 is the Sony OLED TV most folks should buy.” Fortunately, it’s on sale, too. For a limited time, you’ll be able to get the Sony 65-inch Bravia 8 ...

As for the new Surface Laptop 13-inch, the big story here is all about portability. Microsoft shrunk the 13.8-inch Surface Laptop 7 down a bit, and it’s also promising that this model offers the ...

It's a reasonable f2.8 at the wide end but that drops off as ... In addition to manual modes like aperture and shutter priority, there are also specific Bird and Moon modes. The latter easily ...

Adding a subwoofer can be a game-changer if you have a high-quality set of speakers in your home theater or music setup but find that the bass lacks depth and impact. A subwoofer is specifically ...

NGC 1987 is an open cluster of stars located in the Large Magellanic Cloud, captured in stunning detail by NASA's Hubble Space Telescope. NGC 2835 is a barred spiral galaxy located in the ...

Dell Venue 8 Pro tablet was launched in January 2014. The tablet comes with a 8.00-inch display offering a resolution of 1280x800 pixels at a pixel density of 189 pixels per inch (ppi). Dell Venue 8 ...