SV705C astronomical camera has an IMX585 chip, 1/1.2” frame, a resolution of 3856 × 2180, an image area of 11.2mm × 6.3mm, and a 12.85mm diagonal. The near-infrared sensitivity is significantly improved, and it has a very high signal-to-noise ratio, which can improve the user experience.SVBONY SV172 Lens warmer protects the lens of your camera or telescope before freezing and fogging. Perfect for taking pictures overnight or morning in somewhere with high humidity. Made of high quality material, the strip has the characteristics of rapid heat transfer and good heat preservation effect. Besides that, it adopts low temperature cable that can withstand temperature as low as -40°C so the cable is sustainable in cold environment.1.25" 0.5x Focal Reducer for Telescope Eyepiece Photography and Observing.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.