Svbony 1.25 inch 0.5x Focal Reducer for astronomy telescope - F9154A

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When the focal length of the telescope is too long to observe a large area of celestial body with low magnification (such as the moon), you can connect the telescope TO a focal red ucer, shorten the focal length first, and then use a lower magnification lens to observe. This reducer has female threads on the rear to fit filters. Specifications Model F9154A Focal Reducer 0.5x Barrel Size 1.25"/31.7mm Focal length 56mm Thread Interface M28.5x0.6 thread Sleeve Material Full metal aluminum alloy Lens Material Pure optical lens Color Black Total Height: 20mm Show more