Defense forces and intelligence agencies use binoculars to observe the enemy from a safe distance. Bird-watchers, hunters and amateur astronomers are just a few of the people who use binoculars.
You buy the telescope and go home, put it up and go to look at the Moon. You position your telescope to look at the Moon, you see craters, and find that soon as you go to call someone to take a look, they take a look and it is gone. The first number tells the magnification factor.
If you will be staying in one spot for a period of time then it might be to your advantage to consider mounting the binoculars on a tripod which would free up both hands and not require you to find the viewing area, refocus, and keep steady each time you pick them up. So a pair of binoculars that has the number 7x30 stamped onto the casing is a binocular that will magnify any object to seven times its actual size, and has a lens size of 30mm. Binoculars with larger fields of view may work better, but the cost is considerably more.
Phase correction is a coating on the lenses that increases the sharpness, contrast and color saturation. They provide bright images, quality viewing, and total reflection control. Mars and Venus on the horizon are a whole different picture when you can magnify your own vision.
Enjoy you view! Nevertheless, the capabilities of binoculars appeal to both groups as they choose equipment that best fits their needs.
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