EXPANDED VIEWS - The Celestron.7x Reducer Lens increases your EdgeHD 800 telescope's field of view by 43%, capturing more of the night sky in each stunning astrophotography image. SUPERIOR BRIGHTNESS - Fully multi-coated optics maximize light transmission, ensuring brighter, clearer images with enhanced contrast, essential for detailed astrophotography sessions. OPTIMIZED PERFORMANCE - Designed specifically for the EdgeHD 800, this 5-element lens maintains optimal back focus at 105mm, guaranteeing sharp focus across the entire field of view. ENHANCED IMAGERY - Achieve a compression factor of.7x, reducing exposure times and improving image scale, perfect for capturing faint deep-sky objects with exceptional clarity.