Reduces an astrophotography refractor’s effective focal length by a factor of 0.8x, providing a shorter, more optically fast focal ratio
Designed for use with any refractor telescope equipped with a 2″ focuser ,focal lengths between 400mm to 660mm and focal ratios of f/5 to f/7.5
back focus required: 55mm of
Coatings: Fully multi-coated
Clear aperture: 38mm
Weight (gms): 175
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 objects in deep space are very faint and therefore challenging to image without taking very long exposures, increasing the potential for error. 0.8x Focal Reducer for Refractors addresses these obstacles by increasing your refractor telescope’s field of view while reducing the effective focal length by a factor of 0.8x, thereby providing a shorter, more optically “fast” focal ratio to increase astrophotography efficiency. Using the 0.8x focal reducer not only enables your refractor telescope to acquire a larger field of view, but also makes it capable of capturing bright, vividly detailed astrophotos.