Orion Focal Reducer, 0.8x for ED Refractors

Reduces an astrophotography refractor's effective focal length by a factor of 0.8x, providing a shorter, more optically fast focal ratio Now includes interchangeable male M42 and M48 "wide" thread-on camera adapters (T-ring for your camera sold separately) Also flattens the field for sharper stars at the edge of the frame Enables a refractor to both acquire a larger field of view and to capture bright, detailed astrophotos in considerably less time Features fully multi-coated, 38mm clear aperture optics in a machined and anodized aluminum body with 2" barrel threaded for Orion filters Some of the most picturesque celestial objects are too large to fit in the field of view of an imaging refractor and camera. What's more, most deep space objects are very faint and therefore challenging to image without taking long exposures. The Orion 0.8x Focal Reducer for Refractors, designed for photographic use only, addresses these obstacles by increasing your refractor telescope's field of view