A telescope is a scientific optical instrument. Often, manufacturers try to accomplish being inexpensive and being lightweight at the same time.
The first thing to know about a compact binocular is that it is two small telescopes mechanically linked together. The best binoculars for astronomy use are 7 x 50 or larger. A lot of binoculars are ruined when dropped accidentally.
The third- and fourth-generation night-vision binoculars show much clearer images at night, and are priced higher that the previous generation binoculars. An ounce of prevention is worth a pound of repair. But when magnification is increased in binoculars, the brightness as well as the field of view decreases.
Looking in the two to five hundred dollar range when buying binoculars is the best for your money. Galactic clouds and star clusters look dim when viewed by the naked eye, but with binoculars they are much clearer. Another popular feature that has been available on opera glasses is permanent focus.
But if you're into astronomy, you'll need a high powered pair. Your willingness to increase your budget will often provide you with a return in performance of your purchase.
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