Focusers and Accessories

Adds 80mm of physical length to a 2" focuser Provides 85mm of additional outward focus travel Standard 2" male and female barrels Features a non-m...

3-inch self-centering draw tube 17 lb (7.7 kg) lifting capacity 9:1 dual-speed focusing system 84.5mm of precision draw tube travel Rotatable back...

3-inch Self-Centering Focuser Design 17 lb Lifting Capacity for Heavy Imaging Trains 9:1 Dual-Speed Helical Rack-and-Pinion Mechanism 84.5mm of Pr...

Designed for Explore Scientific white-tube ED127 and FCD-100 refractors 17 lb instrument lifting capacity Self-centering compression system elimin...

Designed for 50mm finder scopes Standard height profile at 93mm Lightweight at only 3.9oz (110.6g) Three-point adjustment thumbscrews for precise ...

Designed for 50mm Finderscopes Tall Profile for Comfortable Viewing Angles Quick-Release Dovetail Bracket Multi-Point Adjustment Rings Large, Glov...

Designed for 50mm Aperture Finder Scopes Dual-Ring Bracket with 6 Collimation Points Quick-Release Dovetail Foot (Base Sold Separately) Large, Glo...

8x Magnification 50mm Aperture Right-Angle Eyepiece Erect-Image Optics Illuminated Polar Reticle for Northern & Southern Hemispheres Variable ...

8x50 Optical Design Straight-Through Viewing Standard Crosshair Reticle 6° Field of View Compatible with Explore Scientific Finder Bases Descri...

8x Magnification & 50mm Aperture Wide 6° True Field of View Illuminated, Open-Center Reticle with Measurement Scales Correct-Image View (Uprig...

Dedicated Compatibility: Connects the Explore Scientific 3" 0.7x Reducer/Corrector (FFFR507X-00) to any telescope using the 2.5" Hex Focuser. Im...

2" Diameter Rack & Pinion Focuser 10:1 Dual-Speed Fine Focus Control Weighs 2.0lb (.91kg) Includes 1.25" Compression Ring Adapter Three Lockin...

Weight: 1.4oz Dimensions: 50mm L x 51mm W x 25mm H Provides a secure base for Explore Scientific finder scopes Includes mounting screws for instal...

Replaces standard finder illuminators Powered by two common AAA batteries (not included) Variable brightness control from dim to bright Weight: 1....

Adds 1 inch of focuser back travel Designed for Explore Scientific 2-inch Rack & Pinion Focusers Compatible with Explore Scientific ED APO tel...

Adds Critical Outward Focuser Travel 2-inch Barrel Diameter Designed for Explore Scientific ED APO Telescopes Compatible with 2-inch Rack and Pini...

1.5Adds 1.5 inches of extension Designed for Explore Scientific 2.5-inch Hexagonal Focusers Maintains rigidity of the optical train Enables focus ...

Zero-power reflex sight for intuitive aiming Multi-dot reticle with 4.0°, 2.0°, and 0.5° circles Fits standard mini-Vixen style dovetail bases Int...

T-Shaped Finder Scope Base Designed for Explore Scientific Essential Series Telescopes Compatible with all Explore Scientific Finder Scopes Create...

Introducing the SCT Parallizer®. This new application of Howie Glatter’s patented Parallizer® principle raises the bar for performance. The 2” hol...

User InstructionsThere is a misconception that the problem of the cylindrical slip-fit system we use for eyepieces and other optical accessories is...

5 kg Maximum Payload Capacity High-Precision Stepper Motor Drive Built-in Temperature Sensor for Focus Compensation ASCOM Compatible for Automated...

6x Magnification 30mm Aperture Includes Mounting Bracket Wide Field of View for Easy Star-Hopping Optical Finder Design Description FAQ Specifi...

8x Magnification 50mm Aperture Wide Field of View for Locating Objects Includes Mounting Bracket Description FAQ Specifications In the Box Down...