Optical Accessories

20mm Focal Length 70° Super Wide Apparent Field of View Adjustable LED-Illuminated Single Crosshair 16mm Eye Relief 1.25" Barrel with M28.5*0.6 Fi...

15mm Focal Length 70° Super-Wide Apparent Field of View 1.25-inch Barrel Diameter 13mm Eye Relief 5-Element / 4-Group Optical Design Descriptio...

26mm Focal Length 70° Super Wide Apparent Field of View 20mm Eye Relief Fits 2-inch Telescope Focusers 5-Element / 3-Group Optical Design Accepts ...

7-Piece Filter Set Includes Moon, CPL, and 5 Color Filters Standard 1.25-inch Barrel Size M28.5*0.6 Filter Threads 2mm Thick Optical Glass Desc...

2-inch Filter Size Standard M48x0.75 Threads Enables Automated Dark Frame Capture 1mm Filter Thickness Durable Anodized Aluminum Cell Descripti...

685nm Infrared (IR) Pass Filter Standard 1.25" Threaded Barrel Transmits >95% of light from 673nm to 1100nm Blocks Visible Light with OD2 Block...

Provides a comfortable 90-degree viewing angle Standard 1.25" barrel fits most refractor and SCT focusers Features a 90% reflectivity mirror for b...

99% Reflectivity Dielectric Coatings 90-Degree Viewing Angle 11mm Thick Mirror Substrate Durable Aluminum Alloy Body Brass Compression R...

Captures 1.3 million pixel static images at 1280x1024 resolution Records video at 16 frames per second at full resolution Features a 1/4" CMOS sen...

10mm Focal Length 60° Apparent Field of View Ultra-Flat Field Optical Design 16mm Eye Relief 1.25-inch Barrel with Filter Threads Description F...

7.2mm to 21.6mm Zoom Focal Length 42° to 65° Apparent Field of View 18mm to 20mm Long Eye Relief Standard 1.25" Barrel Diameter Lightweight 167g C...

0.8x Focal Reduction Factor Specifically designed for the SVBONY SV503 102ED Telescope Corrects for field curvature for flat, sharp stars 3-Elemen...

Corrects atmospheric dispersion for planetary viewing 2° to 2.5° prism deviation angle 24mm clear optical aperture Fits standard 1.25" focusers an...

1.0x focal correction factor Designed for the Svbony SV550 80F6 telescope 45mm fully illuminated image circle M63x1 telescope-side connection Prov...

Variable Focal Length Zoom Eyepiece Tactile Clickstop Mechanism at Set Magnifications Constant Apparent Field of View Across Zoom Range Multi-Coat...

2x Magnification Factor 4-Element Optical Design 1.25 inch Barrel Size 3-Screw Coaxial Clamping System Fully Multicoated Lenses Description FAQ...

3nm Dual-Bandpass: Isolates H-Alpha (656.3 nm) and OIII (500.7 nm) emission lines with extreme prejudice against light pollution. ≥85% Peak Tran...

Produces a fully erect, non-reversed image Comfortable 45° viewing angle for terrestrial observation Standard 1.25" barrel fits most refractor tel...

90° Deflection Angle for Comfortable Viewing Aluminum-Coated Mirror with >92% Reflectivity Standard 1.25" Barrel and Eyepiece Clamp Accepts 1.2...

Produces an erect, non-reversed image for terrestrial and astronomical viewing 45° deflection angle provides a comfortable viewing position Phase-...

Produces a 90° erect, non-reversed image Standard 1.25-inch barrel size BK7 prism with anti-reflection coatings 19mm clear aperture CNC machined a...

Reflects over 99% of incoming light with a lab-tested dielectric coating Features a 1.25" Clicklock mechanism for fast, secure eyepiece changes Pr...

Features a 2-inch barrel with a >99% reflectivity dielectric mirror Convenient Clicklock clamping mechanism for secure eyepiece attachment Defl...