Observation and photography of the moon and planets, astronomical observation, astrophotography. The imaging principle of the MAK astronomical telescope: since it is a reflection of light and there is no dispersion of light, chromatic aberration in imaging is a concern for the entire optical system. SV165 40mm Mini Guide Scope is suitable for OTA with focal length within 700mm, it adopts a six-point adjustable angle clamp to support coaxial calibration of the guide scope and the primary mirror. The mount rings allow easy adjustment. Light weight and no flexure as scope changes position. SV205 telescope camera has 8 million pixels,and the sensitivity of IMX415 has been significantly improved, especially in low-light environments; the frame rate has reached 30fps,and both preview and shooting are extremely smooth.7.05MP resolution YUV format transmission speed of up to 15 frames/sec.