SV555 New Upgrade 1.Surface Finish-anti-fingerprint surface; enhances durability 2.Weight Reduction 90g+; portable for travel astronomy 3.Optimized Lens Hood-full protection & portability 4.Enhanced Focus Precision to 3.22mm-Solve the Back Focal Distance problem, smoother adjustment for crisp shots. SVBONY SV555 professional astronomical photography lens is designed for deep-sky photography. For photography users, SV555 will be a good choice to use. SV555 New upgrade--for astronomers who demand portability and precision. SV226 filter drawer adopts integrated CNC molding and anti-light leaking design. It can compatible with 1.25" & 2" specifications filters on the market. Strong magnetic attraction, prevent the filter from falling off.The SVBONY SV241 Astronomy Power adapter is a hub specifically designed for astronomical imaging and an invaluable assistant for shooting the starry sky. It integrates a plethora of power and data interfaces, featuring exceptional industrial design and hardware protection functionalities.SV241 power hub adapter has 6 DC outputs; each supporting up to 10A; 2 USB 3.1 ports for high-speed camera readout. Cooling System: The two-stage TEC cooling, the SV405CC cooled color astronomy camera can lower the CMOS sensor temperature to 30°C Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during longer exposure times. SV220 dual-band filter is designed for astrophotography of emission nebulae, planetary nebulae and supernova remnants. The high transmission and sharp cut-off greatly enhances the contrast of image and brings out the most detailed information of those deep-sky objects.