OPT is proud to sell ZWO astronomy cameras and products. Our in house salesmen use and sell their equipment daily. We recommend them to new astroimagers and experienced alike because of their exemplary quality and consistent performance at a great value. ZWO is constantly innovating to create new and more useful designs. They produce extremely high-quality CMOS cameras that act as a low-cost alternative to a CCD camera that doesn't lose out on quality.