Multi-layer broadband coating: Multi-layer coating is applied to the front and back of all mirrors to reduce the loss of incoming light and improve image quality.;Install the locking knob: carry the telescope main lens barrel， fix the lens barrel to prevent the lens barrel from being damaged， easy to operate， easy to use;Zenith mirror: make the observation process more convenient， optical lens transmittance is high， easy to operate;Optical finder mirror: using high-quality optical lens finder mirror， as an auxiliary mirror， the function can not ignore the department to quickly find the tracking star;Aluminum alloy tripod: Made of aluminum alloy， the three-legged support is firm and firm， stylish and easy to install and carry.