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Binoculars
by Kelham Regress
http://www.linkbinoculars.com
Binoculars are two identical telescopes mounted side-by-
side and pointed in the same direction so they can be
viewed through each of the user's eyes. By contrast,
"monoculars" are relatively small single-tube telescopes.
The advantages of binoculars over monoculars are:
1. Both eyes can see comfortably through both lenses
with having to squint one eye to see.
2. Binoculars provide three dimensional images that
have more depth. Two views are drawn together to make one
total picture and allow the viewer to see things at some
distances up close and personal.
3. Binoculars are just more comfortable to look through
and hold steady because both hands are usually used.
Binoculars come in the convenient hand-held sizes which
make them very easy to take with you wherever you go.
However, binoculars can also come in very large sizes but
those are usually used by more professional viewers and
need to be steadied by being placed on a tripod for support.
Binoculars used to view objects which are not at a fixed
distance must have a focussing arrangement. In some cases
the two telescopes must be focused independently, but most
sets of binoculars allow the the viewer to focus both tubes
with one action, typically the rotation of a central
focussing wheel. Viewers with prescription glasses can
remove their glasses and focus their binoculars enough to
see clearly. On most binoculars, the distance between the
eyepieces can be adjusted to accommodate viewers with
different eye separation.
Numbers are used to describe the telescopic strength of the
binoculars. The first number gives the power of the
magnification and the second number tells the diameter of
the objective lens in millimeters which measures its light
gathering strength. For instance, a pair of binoculars that
reads 7x50 can magnify things seven times stronger than
they actually are with a 50mm objective lens.
People use binoculars for many different things. Many use
them to bird watch, star gaze, or to view wild animals from
a safe distance so they will not be disturbed. Personal
binoculars are portable and go everywhere with their owners
like camping, hiking, sporting events, boating and hunting.
Many star gazers actually prefer to use binoculars instead
of telescopes because they enable the user to see more
stars, comets and galaxies than with the naked eye as well
as seeing them in a more natural light. Binoculars are
easier to operate for the laymen and allow the viewer to
see more of what their looking at. Unlike a telescope that
shows a narrower point of view.
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