Binoculars

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Binoculars 

A set of two identical telescopes, one for each eye, which gives binocular vision of magnified distant objects. The images are erected using either an eyepiece of negative power, or prisms, or very occasionally, an additional lens system placed between objective and eyepiece. On binoculars, the magnification M and the diameter D of the objective or entrance pupil are shown as MD (e.g. 8 ✕ 30). Syn. field glasses; prism binoculars (for those which use prisms as erectors). See erector; galilean telescope; terrestrial telescope.
References in periodicals archive ?
Bogdan watched through his field glasses to see how his courage functioned in battle, and saw him under shrapnel and annihilating shellfire, only sometimes stooping slightly; he even stepped back from the firing line and filled his fancy pipe, though he didn't light it.
As Santa Anna occupied San Antonio and trained his field glasses on the Alamo, he saw a red, white, and green Mexican flag on which was written the legend, "1824"--a reminder of the Mexican constitution of 1824, under which Texians had been promised statehood.
A couple dozen human observers huddle in a nearby blind, field glasses and telephoto lenses at the ready The late-afternoon sun paints the tallgrass bright yellow Perfect light, perfect stillness.
Far below the ruin, using my Zeiss Field glasses, I made sketches: remembrances Of the world.
With field glasses and cameras slung 'round their necks, several dozen hikers scanned the Sonoran desert last month, hoping to spot a rarely sighted bird.
You would have needed a pair of Rommel's field glasses to spot his speck in the distance.
From the general-interest standpoint, Binoculars, Opera Glasses, and Field Glasses by Fred Watson of the Anglo-Australian Observatory is considerably more restricted than Seyfried's book.
Costa Rica's newfound eco-consciousness has spawned a whole host of private entrepreneurial preserves, like the Quetzal Farm in mountainous rural Los Santos, where the brilliant red-breasted, green-bodied quetzal bird - considered by many to be the most beautiful in the world can be glimpsed through field glasses, calmly preening its feathers.
For hunters, compacts are, at best, a compromise because most of them do not have high enough relative brightness factors to be the best choice during dawn and dusk periods -- the times when hunters most need their field glasses.
Additionally, hiking sticks, binoculars, field glasses and camping lanterns and lights will also be made available for the active, outdoors enthusiast.
We were both on our bellies behind a log, me with my rifle poised for a shot, Dad with his field glasses scanning the fringe of the forest and the huge natural meadow that was Bummer's Flats.
Later, I heard how a servant from the hall had seen the boat on the lake and how the gamekeeper had gone down to the lake with his field glasses.