Big binoculars are commonly known as observation binoculars. This type of binocular features objective lenses of diameters of 70mm and upward (to 150mm). They are excellent for astronomers and long range terrestrial observations. Observation binoculars are strongly built in order to maintain collimation (optical alignment) of the two sides. It becomes more difficult to maintain as the power is increased. To achieve better results such binoculars need very sturdy tripods. big binoculars are ideal for naturalists, bird-watchers, wardens, fire-watchers, coastguards, yachting club members, executives, estate managers, security staff and hotel guests. Some of the advantages are better light grasp, higher resolution, and opportunity of high magnifications while using both eyes, long focal lengths to minimize color dispersion and improve depth of field.

Big Binocular Manufacturers

• Bushnell

Big Binocular Reveiws

Oberwerk 25x100mm IF Astronomy binoculars 20X magnification Lightweight design Crisp images	Miyauchi 26x100 "Galaxy" bj-iCE APO binocular Strong color correction Upgradeable eyepiece Top of the line
Oberwerk 20x80mm "Standard" 20X magnification Lightweight design Crisp images	Bushnell Perma Focus 8x25 Fully coated optics Focus-Free Non-slip rubber armor
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