Specification Brand : Omegon BulletPoint1 : The contrast filter is made of homogeneous optical glass with multi-coating and impresses with its high imaging quality and sharp contours. BulletPoint2 : With a light transmission of 30%, the filter is suitable for spotting scopes and telescopes with smaller diameters (up to 150mm recommended). BulletPoint3 : Due to its metal frame, the telescope filter is particularly stable and can be screwed onto (almost) all 1.25" eyepiece threads. BulletPoint4 : The telescope moon filter reduces the brightness and increases the contrast, e.g. of planets or during bright moon phases. BulletPoint5 : In addition to the eyepiece filter, the scope of delivery also includes a matching plastic storage box for safe transport. BulletPoint6 : An individual test report of this premium filter is included Color : OneColor ExternallyAssignedProductIdentifier : 4049467050858 ExternallyAssignedProductIdentifier1 : 6918734564870 ExternallyAssignedProductIdentifier2 : 6918734602961 ItemName : Omegon Premium Moon Filter for telescopes with 1.25 inch Thread, Multi-Coated, Made of Aluminium, Reduces Brightness by 70% and Increases Contrast ItemPackageDimensions_Height : 1.8 centimeters ItemPackageDimensions_Length : 4 centimeters ItemPackageDimensions_Width : 5.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : telescope-filters Manufacturer : Omegon Material : Glass ModelNumber : 4049467050858 NumberOfItems : 1 PartNumber : 4049467050858 PhotoFilterEffectType : Enhancing PhotoFilterThreadSize : 150 millimeters ProductDescription : H-Alpha Emission Filter 656nm Narrow Band Pass Multiple Sizes With Frame For Astrophotograph Telescope ProductSiteLaunchDate : 2012-08-29T20:04:47.042Z Size : 67mm UnitCount : 1 WarrantyDescription : Limited USA One Year Warranty WaterResistanceLevel : water_resistant