They rely on mirrors, rather than more expensive lenses, to give good deep-sky viewing. A 6-inch Newtonian reflecting telescope is typically comparable in price to a 3-4-inch refracting telescope.

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 ...

Questar 3.5-inch. The Observatory's three Maksutov-Cassegrain Questars are generally considered to be the "cadillacs" of small telescopes. Although the small aperture, 3.5 inches in diameter, only ...

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.

Choose a 130mm/5-inch telescope with a focal length of 1,250mm (and a focal ratio of f/9.6) and that same 10mm eyepiece will magnify a planet 125x. If you want to specialise only in planets then ...

If you want a smart telescope offering less portability, but more resolution and detail then head for the Vespera's bigger sister, the Vaonis Stellina, a 3.15-inch/80mm f/5 ED refractor with a ...

The telescope operates as a transit telescope—moving along only one axis—with all-night, real-time, star-viewing and image-storage capabilities. It has higher light-gathering and resolving power than ...

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.

Back in 1969, my first telescope was a 4-inch reflector that had appalling optics and a wobbly mount. It sold for $29.95. According to the United States Department of Labor, inflation has made ...

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).