Description Ready for taking great photos of deep-sky objects! The SD flattener HD kit is designed for a flat focal plane to produce crisp image of stars with the SD series of APO refractors. It consists of a high-performance flattener lens and a connecting tube ring. The SD flattener HD lens improves off-axis image quality […]

Description For Photography of Extended Nebula and Cluster Reduces focal length, increasing the field of view and decreasing the exposure time to dramatically increase your density or signal to noise ratio, makes it suitable for taking photographs of extended Nebula and Cluster. Specs Appliable Telescope VMC200L、VMC260L、VMC330L Features Reduces Focal Length by 062x Coating Fully multi-coat […]