2" 3x Focal Extender
$299.99
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2" 3x Focal Extender
$299.99
3X Magnification
Triples eyepiece power output
2-Inch Barrel
Fits two inch focusers
EMD Coatings
Enhanced multilayer lens coatings
Dual Format
Accepts two eyepiece sizes
High Contrast
Edge blackened lens elements
Comfortable Viewing
Maintains generous eye relief
In Stock
Celestial Magnification BoostTriple your telescope magnification easily
The Explore Scientific 2" 3X Focal Extender - FE03-020 triples the magnification of your existing eyepieces while preserving comfortable eye relief. Engineered with premium optics, this essential telescope accessory allows visual observers and astrophotographers to easily expand their observing capabilities.
Precision Optical PerformanceAdvanced coatings for ultimate viewing contrast
Designed for demanding astronomers, the Explore Scientific 2" 3X Focal Extender - FE03-020 features fully EMD-coated optical elements on all air-to-air surfaces to maximize light transmission and minimize internal reflections. Every lens element is edge-blackened to deliver superior high-contrast planetary and deep-sky views. Accepting both 1.25-inch and 2.0-inch format eyepieces and camera adapters, this 3X focal extender provides high-power views without sacrificing the generous eye relief of lower focal length eyepieces, making it an ideal optical upgrade for eyeglass wearers and fast telescopes.
Technical SpecificationsKey measurements and physical data
Item Number
FE03-020 (hash)
Barrel Size
2.0-inch
Magnification
3X
Length
125mm
Width
66mm
Weight
1.7 lbs
Optical Coatings
Fully EMD Coated
Eyepiece Format Compatibility
1.25-inch and 2.0-inch O.D.
Key Optical FeaturesEngineered for high performance astronomy
Triple MagnificationIncreases eyepiece power output by 3X
EMD CoatingsFully coated air-to-air lens surfaces
Blackened EdgesEdge-blackened lenses eliminate internal stray reflections
Dual Size CompatibilityAccepts 1.25-inch and 2.0-inch eyepieces and adapters
Preserved Eye ReliefMaintains long eye relief of low power eyepieces
Versatile DesignOptimized for visual observing and astrophotography
Frequently Asked QuestionsEverything you need to know
What barrel sizes work with the Explore Scientific 2" 3X Focal Extender - FE03-020?
The Explore Scientific 2" 3X Focal Extender - FE03-020 fits standard 2-inch focusers and accepts both 2.0-inch and 1.25-inch format eyepieces or camera adapters.
How does the Explore Scientific 2" 3X Focal Extender - FE03-020 preserve eye relief?
Unlike standard focal expanders that alter eye placement, the Explore Scientific 2" 3X Focal Extender - FE03-020 maintains the original, comfortable eye relief of your lower-power eyepieces while tripling their magnification.
Are the optics fully coated on the Explore Scientific 2" 3X Focal Extender - FE03-020?
Yes, the Explore Scientific 2" 3X Focal Extender - FE03-020 features full EMD (Enhanced Multilayer Deposition) coatings on all air-to-air surfaces and edge-blackened lenses for maximum light transmission and glare reduction.