Products

40mm Focal Length 40° Apparent Field of View 1.25" Barrel Diameter Standard M28.5*0.6 Filter Threads Lightweight 82g Metal Construction Descrip...

Protects 42mm Objective Lenses Fits Binocular Barrels with 52-54mm Outer Diameter Tethered Design Prevents Loss Shields Against Dust, Rain, and Sc...

Three Focal Lengths: 4mm, 10mm, and 23mm 62° Apparent Field of View Aspheric Lens Design Fully Multi-Coated Optics Standard 1.25" Barrel Diameter ...

5X Magnification Power 1.25" (31.7mm) Barrel Size Multi-Coated Optical Glass Durable Metal Housing Weight: 3.0oz (85g) Description FAQ Specific...

5x Magnification 24mm Aperture Wide Field of View for Easy Aiming Includes Mounting Bracket Lightweight Plastic Construction Description FAQ Sp...

66° Apparent Field of View Available in 6mm, 9mm, 15mm, and 20mm Focal Lengths Fully Multi-Coated Optics Standard 1.25" Barrel Threaded for 1.25" ...

Achieve Prime Focus with SLR/DSLR Cameras Provides Necessary Focuser Extension All-Metal Aluminum Construction Lightweight and Durable Design Wide...

Broadband Light Pollution Suppression Effectively Blocks Sodium and Mercury Vapor Streetlights High Transmission on Key Nebula Emission Lines Opti...

Full Metal Construction for Zero Flexure 42mm Wide Universal Mounting Base Fits Celestron, Orion, Sky-Watcher, and Vixen Telescopes Ideal for Addi...

Reduces light transmission to a comfortable 13% for lunar viewing Standard 1.25-inch barrel size fits most eyepieces and accessories Threads into ...

Includes four M42 extension tubes: 5mm, 10mm, 15mm, and 20mm Standard M42x0.75mm T2 male and female threads Stackable to achieve combined lengths ...

Safely locate the Sun without direct viewing Simple pinhole projection design Durable all-metal construction Compact 68*41*32mm dimensions Lightwe...

Eyepiece Compatibility: 24-38mm Diameter Smartphone Width: 60-95mm 360° Camera Rotation Durable Metal Construction Foam-Padded Phone Protection ...

105mm Maksutov-Cassegrain Optics 1365mm Focal Length f/13 Focal Ratio Weighs Only 4.83 lbs (2193g) 377mm Optical Tube Length Dual Finder Mounting ...

Maksutov-Cassegrain Optical Design f/11.8 Native Focal Ratio f/7.68 with Included 0.65x Reducer Internal Dual-Speed Focuser 210mm Vixen-Style Dove...

90mm Aperture Maksutov-Cassegrain Optical Design Internal Baffling for Stray Light Control 70mm Vixen-Style Dovetail Plate Standard 1.25-inch Focu...

Reduces glare for comfortable lunar and planetary observing Fits any standard 1.25" eyepiece or accessory Standard M28.5x0.6 filter threads Enhanc...

Professional Geological Pocket Transit Lightweight at 106g (3.7oz) Compact Dimensions: 80mm x 70mm x 32mm Integrated Clinometer for Vertical Angle...

Complete 3-Piece Lens Cleaning Kit Includes Air Blower, Brush, and Microfiber Cloth Safe for All Coated Optics Non-Abrasive, Non-Toxic Materials R...

Precise 635-655nm red laser for accurate optical alignment 7 adjustable brightness levels for visibility in any condition Triple-cemented lens ens...