Telescopes

Telescopes and Equipment

How does one determine magnification? I have an Edmund Scientific Astroscan, 4-1/8-inch aperture, F/4.2 reflecting telescope, used with a 2.5x Barlow lens and a 28mm Plossl eyepiece.

Telescopes and Equipment

I am struggling to find a system for telescopic observations of the planets and their major moons worthy of photographing. One wrinkle: I am in a wheelchair and almost blind.

Telescopes and Equipment

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Telescopes and Equipment

When amateur astronomers grow old and wish to donate their telescope and observatory to their local club, who assesses the value?

Telescopes and Equipment

We test Denkmeier’s 3-D eyepieces

Telescopes and Equipment

Sky-Watcher USA’s hot new scope tested

Exoplanets, Planets, Telescopes and Equipment

NASA introduces new wider set of eyes on the universe

Exotic Objects, Telescopes and Equipment

Telescopes team up to produce highest-resolution astronomical image

Telescopes and Equipment

We test Tele Vue’s DeLite eyepieces

Cosmology, Exoplanets, Planets, Stars, Telescopes and Equipment

Web Extra: 2015’s other big space stories

Telescopes and Equipment

Hawaii’s Supreme Court begins to hear Thirty Meter Telescope case

Telescopes and Equipment

Web Extra: Rebirth of a legendary telescope