Datyson 1.25inch 0.5x Focal Reducer M30x1mm for Astronomy Telescope

1. 100% brand new2. Fits all standard 1.25inch/ 31.7mm scope eyepieces3. Its role is to shorten the focal length, increasing the field of view, usually for a longer focal length telescope4. The reducer has standard 1.25inch telescope threads M30x1mm and fits onto the nose of any 1.25 inch eyepiece, diagonal, extender tube, or camera adaptor fitting that format5. Reduces your telescope's focal ratio by 0.5Increases imaging areaOptical lens helps transmit more lightCan both have a filter attached and be threaded onto an eyepiece or cameraNice anodized aluminum housingIt is not recommended for very fast scopes or very wide angle eyepieces for visualLens Material: optical glasscolour: blackMaterial: aluminumPackage Contents:1 x 0.5X Focal Reducer LensOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.