Specification Brand : Celticbird BulletPoint1 : Two-element optical lens helps transmit more light, nice green sheen when held at an angle. BulletPoint2 : The reducer has standard 1.25inch telescope threads M28.5x0.6 and fits onto the nose of any 1.25 inch eyepiece, diagonal, extender tube, or camera adaptor fitting that format. BulletPoint3 : Threaded male on one end and female on the other so it can both have a filter attached and be threaded onto an eyepiece or camera. BulletPoint4 : Reduces your telescope's focal ratio by 0.5, which results in a wider field of view. It increases imaging area and allows capture of larger starfields or deep-sky objects, works as essentially a reverse barlow. BulletPoint5 : Nice anodized aluminum housing CompatibleDevices : Camera ExternallyAssignedProductIdentifier1 : 792933218958 ExternallyAssignedProductIdentifier2 : 0792933218958 EyePieceLensDescription : Barlow Finderscope : Reflex FocusType : Manual Focus ItemName : Celticbird 0.5 Focal Reducer/Field Flattener 1.25" for Starshoot Imaging Cameras - with Standand Filter Threads ItemPackageDimensions_Height : 3 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : telescope-filters Manufacturer : Celticbird ModelName : Celticbird 0.5 Focal Reducer/Field Flattener 1.25 ModelNumber : JJJ PartNumber : JJJ PhotoFilterEffectType : Eclipse PhotoFilterSize : 50 millimeters PowerSourceType : Manual Operation ProductDescription : Celticbird 0.5 Focal Reducer/Field Flattener 1.25" for Starshoot Imaging Cameras - with Standand Filter Threads ProductSiteLaunchDate : 2023-04-04T07:50:11.934Z SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 41111700 WaterResistanceLevel : not_water_resistant ZoomRatio : 1