Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED f/5.8 Refractor

While maintaining the precision and quality that Sky-Watcher is known for, the 0.85x Reducer/Flattener for EvoStar 72ED f/5.8 Refractor is a high-quality, durable, and innovative addition to your astronomical equipment. This efficient and user-friendly device is specifically engineered to lower the native 420mm (f/5.8) focal length of your EvoStar 72ED f/5.8 Refractor down to a more manageable 355mm (f/4.93). In doing so, it not only enhances your viewing experience but also significantly reduces exposure time by a substantial 38%. This makes it an ideal tool for capturing those fleeting celestial moments with greater ease and precision. The 0.85x Reducer/Flattener is compatible with both APS-C and full-frame sensors, although it is optimally designed for use with APS-C and smaller sensors. This ensures a more tailored and effective performance. When used with a full-frame camera, the field of view (FOV) measures an impressive 5.8 x 3.87 degrees. With an APS-C crop sensor, the FOV measures 3.79 x 2.53 degrees, providing a broad and detailed view of the night sky. Furthermore, this device contributes 55 mm of back focus, enhancing the overall functionality and versatility of your EvoStar 72ED f/5.8 Refractor. With the 0.85x Reducer/Flattener, you can explore the cosmos with enhanced clarity and precision.