Monoculars Telescope astronomical binoculars adults high power for indoor and outdoor
If it has not been used for a long time, keep it in a dry place.
Even if it is waterproof, store your telescope in a dry place. It can resist light water, but it can't be used in heavy rain for a long time or soaked in water.
Wipe the lens with a clean, dry cloth. If you have some stubborn stains, use a cloth to rub some alcohol. It is easy to remove.
Adjust the distance
First of all, most of the telescopes are now rotating eye systems. When using, turn the eye to the highest position (this is generally the case). If you wear or when the eye is turned to the highest, you still can't see the full field of view or field of view. With a black shadow (shadow), you need to adjust the eye to the most comfortable height of your glasses.
Adjust the eye distance
Change the distance between the two barrels of the telescope until the left and right views are a circular field of view. At this time, the exit pupil distance of the two lens barrels is the same as the distance between the two pupils of the human eye.
Focus
First turn the telescope's centering mechanism handwheel until the left eye can see the target. Then turn the right handpiece of the right eyepiece to make the right eye see the target.
observation
The telescope is roughly aligned with the observation target, and the center adjustment mechanism is rotated, so that both eyes can quickly see the target at the same time. For scenes of different distances, as long as you turn the middle adjustment mechanism, you can quickly see it clearly.