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 ...

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.

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.

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 ...

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.

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 ...

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.

Both affordable and portable, many of today's best telescopes for beginners are of the 90mm/3.5-inch type. With it you'll be able to see some of the night sky’s most beautiful celestial wonders ...

DURING the past few years, responsibility for the construction of the 200-inch telescope and the solution of its many problems has lain with the members of three committees organized to deal with ...

The Celestron StarSense Explorer 8-inch Dobsonian telescope ($799.95/£649.99) couldn't come sooner. If you want the most bang for your buck when observing the night sky with a telescope you ...

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 ...

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).