Specification Brand : Explore Scientific BulletPoint1 : Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods. BulletPoint2 : Each 100掳 Series Argon-Purged Waterproof eyepiece is internally sealed and purged with inert, dry argon gas. BulletPoint3 : Every 100掳 eyepiece is tested by submerging them down to 1 meter of water for 30 minutes. BulletPoint4 : All 100掳 Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast. BulletPoint5 : Eyepiece plug diameter: 2" Color : black ExternallyAssignedProductIdentifier : 6970019291215 ExternallyAssignedProductIdentifier1 : 4007922201320 ExternallyAssignedProductIdentifier2 : 04007922201320 EyePieceLensDescription : Barlow FieldOfView : 120 degrees Finderscope : Reflex FocalLengthDescription : 9 millimeters FocusType : Manual Focus ItemName : Explore Scientific 5,5mm high-Resolution Argon-purged high-end Telescope Eyepiece with 100掳 Apparent Field ItemPackageDimensions_Height : 19.4 centimeters ItemPackageDimensions_Length : 16 centimeters ItemPackageDimensions_Width : 16.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : telescope-eyepieces Manufacturer : Explore Scientific ModelNumber : 0218405 PackageLevel : unit PartNumber : 0218405 PowerSourceType : Manual Winding ProductDescription : The Astromania Stereo Bino Viewer allows you to adapt two eyepieces to your telescope and view with both eyes simultaneously. In addition to eliminating eye fatigue associated with viewing through one eye for a prolonged period of time, this bino viewer also provides a three dimensional effect while observing many celestial objects.The Stereo Binocular Viewer will also improve contrast on deep sky objects as well as solar system objects. The Stereo Binocular Viewer is designed to work with Schmidt-Cassegrain telescopes (SCT) and many refracting telescopes.Features high quality FMC BAK-4 prisms reduce light loss. Each unit is quality control inspected for collimation and performance.The Stereo Binocular Viewer requires you use two eyepieces of equal focal lengths and optical design. ProductSiteLaunchDate : 2016-07-16T08:45:30.166Z Size : 5,5mm (2") StreetDate : 2019-02-26T00:00:01Z SupplierDeclaredDgHzRegulation : not_applicable TelescopeMountDescription : Altazimuth Mount