what are some inteeresting facts about binoculars?

6 Responses to what are some inteeresting facts about binoculars?

1. tbgleason says:

   December 11, 2011 at 12:31 am

   Some of them are infrared
2. ♥ Celine ♥ says:

   December 11, 2011 at 12:58 am

   You can see great distances with both eyes.
3. faesson says:

   December 11, 2011 at 1:12 am

   they use prisms to erect the image. Total internal reflection… no mirrors.
4. Poor Horatio says:

   December 11, 2011 at 1:48 am

   Because you are using both eyes, you are taking advantage of binocular parallax to see images in stereo or 3-D.

   Because of their relatively small size, binoculars are conveniant to use and very portable.

   Binoculars are less expensive than telescopes.
5. suitti says:

   December 11, 2011 at 2:23 am

   They come in lots of sizes. I use my 1×7’s more than any other pair. But i also have 8×21’s, and 8×42’s. You can get 400×406 binoculars. Very portable – they only weigh 175 pounds. On Mount Graham, there’s an 8000×8400 pair. They’re not very portable, but they’ve got them in a nice observatory.

   There’s an alignment issue between the oculars (telescopes). They’ve got to be lined up pretty well. If they’re not, your brain can compensate a little.
6. orion_1812 says:

   December 11, 2011 at 2:42 am

   Binoculars – Bi meaning two oculars optical etc

   Light weight, adjustable for width between eyes, regular or zoom focus capibility, Uses prisms to correction, described by objective and mutiplying power. The best ones are liquid filled to prevent clouding or image distortion. The best found for amatuer asatronomy are 10×50. 7×35 are great for hunting.

   The first number is the magnification of the eyepiece. The second number is the width in mm of the objective lens.

   Field of view is the comparison to what you see. The apparent distance seen thru the binocs from one side tothe other.