It is very important that the telescope has a sense of presence in addition to the three-dimensional sense. Hand-held small single pipe, because of low technical requirements, low production threshold, few good products, most of which are very low-grade, do not pay attention to products.
The difference between monocular telescope and binoculars. Binoculars have a strong stereoscopic effect. Because both eyes are used at the same time, binoculars may be more comfortable to use. Binoculars are easier than holding one eye, because the hand and the first three points can form a stable plane. A monocular telescope does not have the problem that the optical axes of the two lens barrels are parallel, so it can be designed with a higher magnification and can be designed as a zoom telescope. Compared with binoculars, the weight of monocular telescope is reduced by about half.