Astronomy binocular has lots of
advantages over telescope. Astronomy
binocular is generally cheaper than
telescope because it requires fewer
accessories to setup. Binoculars are not
as complicated as telescope because it
requires less skill to operate.
Binoculars are small and can easily fit
into your pocket.
Astronomy binoculars consist of two sets
of refracting telescopes. The size of
the objective lens is called the
aperture. The aperture controls how much
light enters into the binocular. If the
aperture has a large size, the image
will be brighter and the size of the
image will also increase proportionally.
Astronomy binoculars are labeled with
two numbers for example 10X25. The first
number determines how many times the
image will be enlarged over the normal
size. An 10X25 binocular has the ability
to make the object look 8 times larger
than the actual size. The second number
refers to the width of the objective
lens. The second number has a direct
impact on the image magnification and
quality. The larger the second number,
the brighter and shaper the image will
be. When shopping for binoculars, you
must be able to balance these two
numbers so that they will produce your
desired magnification. Binoculars with
aperture less than 29mm will produce low
magnifications but the image will be
bright enough. Small binoculars are
suitable for small children.
Some binoculars have zoom functions and
other sophisticated features which is
useful for hunting, bird watching and
whale watching. However, it is
recommended that you only buy astronomy
binocular if you plan to use it to
observe the sky as other types of
binoculars will not be suitable. |
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