Specification Brand : XJJ BulletPoint1 : Include:Dew Shield Cap Cover Bahtinov Mask Spike Diffraction 4 veins Spike Diffraction 6 veins.Bahtinov mask and divergence spikes can only be connected to the lens through the dew cover in the assembly, and cannot be directly installed on the lens. BulletPoint2 : Bakhtinov mask can make the light received by the lens form three rays on the lens. You only need to adjust your focus ring so that these three rays cross at one point, and perfect focus will be formed. BulletPoint3 : Diffraction Spike Mask Slide is used for cool fun effects on bright stars. Simply slide it in, then watch as stars get cool spikes. BulletPoint4 : You recieve the MASK DELUXE Dust Cover, which allows you to protect the optics of the Seestar S50. And yes, you can even power down the Seestar with the Dust Cover installed! BulletPoint5 : A rain cover can prevent your telescope optical system from fogging first. and the design of internal frosting can reduce the refraction of some light, allowing you to observe for hours with perfect angle. Color : Black ExternallyAssignedProductIdentifier : 7677460188130 ItemName : XJJ Telescope Dew 4 ",Bahtinov mask, Cap Cover and Diffraction Spike Set are Compatible with ZWO SeeStar S50. ItemPackageDimensions_Height : 10.2108 centimeters ItemPackageDimensions_Length : 6.4008 centimeters ItemPackageDimensions_Width : 10.2108 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : telescope-dew-caps Manufacturer : XJJ ModelName : Other (Lens Accessories) ModelNumber : G06LPGDP36FQW46NLHX NumberOfLithiumMetalCells : 1 PartNumber : XJJ ProductDescription : XJJ telescope Dew 4 ",Bahtinov mask, Cap cover and Diffraction spike set are compatible with ZWO SeeStar S50. ProductSiteLaunchDate : 2024-08-29T08:12:36.793Z Size : 43.00X3.50X1.00CM Style : Bundle with 1.25" 45-Degree Diagonal Prism SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 41111715