What is the best brand of domestic telescopes?

The top ten are Startron, 17 13, Bosch Music, Nikon/Nikon, Guanbo, Jiaming Jiaming, Stark Music/Steiner, Sirius/Tianlang, Persian Cat Optics and/or Zeiss.

17 13 brand belongs to Wujiang linjie outdoor clothing co., ltd, which was established in 2009. 17 13 focuses on photography in professional fields, and is famous for its delicate pictures and rich colors. It is a world-famous optical product designer and manufacturer. 17 13 is internationally renowned for its exquisite workmanship, reliable quality and durability, especially in Asian countries, and has long been favored by photographers.

Precautions and key points of telescope:

Telescope is a visual optical instrument used to observe distant objects. It can enlarge the small opening angle of distant objects according to a certain proportion, so that they have a larger opening angle in the image space, and make the objects that were invisible or unclear to the naked eye become clear. It is an optical system that makes the incident parallel beams pass through the objective lens and eyepiece and still exit in parallel.

Because the chromatic aberration and spherical aberration of Dan Toujing objective lens are quite serious, modern refractive telescopes generally use two or more lens groups. Among them, the double lens objective is the most common. It consists of a convex lens made of crown glass and a concave lens made of flint glass, which are very close. It can completely eliminate the position chromatic aberration of two specific wavelengths and reduce the position chromatic aberration of other wavelengths.

Refer to the above content: Baidu Encyclopedia-Telescope