No other telescope design offers the combination of features and portability as a Schmidt-Cassegrain telescope (SCT). You may not consider it the best for any one application, but it does everything ...

Visual perception is a critical pathway for humans to expand their cognition of the surroundings, driving the continuous ...

For Green laser: For 532nm Diode pump solid state laser, with ultra compact configuration, long lifetime, low cost and easy to operate, which is widely used in collimation, laser medical treatment, ...