The original instrument to occupy the 25-foot diameter dome was the 10.5-inch Bausch refracting telescope (f/15.5) installed in the brand new observatory in 1953. Bausch & Lomb Company gave the ...

I enjoyed being the focus of my friends’envy when I had the opportunity to field test StarStructure Telescopes’ 12.5-inch f/4.8 Dobsonian-mounted, truss-tube reflecting telescope.

You might ask if a 2-inch telescope is enough. Oh, yes. Remember that the object you’re observing is the Sun. There’s plenty of light to go around.

This palm-sized, rugged telescope has quickly become a core part of my outdoor gear kit thanks to a ten times zoom and a ...

We’ve tested 17 top-rated telescopes over the years, and we’re certain the Celestron NexStar 5SE provides the best image quality and ease of use for beginners.

My rule of thumb is 35x per inch of aperture. For example, if you have a 60mm (2.36-inch) telescope, your image may break down over 80x magnification (2.36 x 35 = 82.6).

This Newtonian reflector telescope features a 5-inch primary mirror with highly reflective coatings to produce sharp, clear images. The 130mm aperture gatherers lots of light, so it’s plenty ...

Even though it is a very heavy bit of kit, it's fairly compact at 35.12 x 28.5 x 15 inches, and its large 9.25-inch (235mm) aperture and focal length of 9 inches (2350mm) give you a powerful ...

A 5.1-inch/130mm Newtonian reflector telescope, the Celestron StarSense Explorer DX 130AZ telescope has a focal ratio of f/5, so collects more light from distant targets.

At the heart of the new Vera C. Rubin Observatory is a digital camera that will create an unparalleled map of the cosmos.

Gizmodo Spaceflight Editor George Dvorsky was able to image the supernova on May 23 using a 4.5-inch telescope and a 40-minute exposure. You can see his photo below, in which the exploded star is ...

A 2.4-inch refracting telescope, for example, should never use more than 120-power magnification (the general rule of thumb is 50-power per inch of aperture). In fact, ...