Young or old all would agree that it is impossible to bird watch with out a pair of binoculars. Since the dawn of time, man has looked up at the heavens and wondered the beauty it may contain.
Still, recent trends have brought down the price to more affordable levels. For astronomy use you will need at least 40mm aperture and preferably larger. Focus adjustments on each set of binoculars are different, some binocular lenses can be focused independently while others can be focused at the same time by turning a little wheel in between the telescopes.
Optics in night vision binoculars amplifies the existing light. You can see so much detail in the craters, one which you can not see by plainly looking at the moon with the naked eye. Since the advent of the original coating, the technique has been refined, and there are several grades of lens coating available.
One of the most significant advances in optics is in water and fog proofing. If you are going to take up bird watching, trust me, you will love it.
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