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Explore Scientific

Explore Scientific 3x Focal Extender (1.25") – FE03-125

Explore Scientific 3x Focal Extender (1.25") – FE03-125

$209.99
$209.99
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The Explore Scientific 3x Focal Extender (1.25") FE03-125 is a precision optical accessory designed to significantly increase the magnification of your telescope when paired with 1.25" eyepieces. By tripling the effective focal length of compatible optics, this focal extender unlocks higher magnification options without the need to purchase dedicated high-power eyepieces. It preserves comfortable eye relief from lower-power eyepieces at higher magnifications, making it ideal for detailed observation of planetary surfaces, lunar features, and compact deep-sky objects.

Engineered with fully multi-coated optics and edge-blackened lenses, the FE03-125 maximizes light transmission while reducing internal reflections and unwanted flare. Its precision construction ensures reliable, stable alignment and enhances the value and versatility of your existing eyepiece collection. The compact 1.25" format ensures broad compatibility with standard telescope focusers, diagonals, and eyepiece holders.

Features

  • 3× magnification increase expands the power of any compatible 1.25" eyepiece

  • Fully multi-coated optics for bright, high-contrast imaging

  • Edge-blackened lenses minimize stray light and enhance contrast

  • Preserves comfortable eye relief at higher magnifications

  • Enhances the versatility of existing eyepiece collections

  • Compact, lightweight design fits standard 1.25" focusers

  • Ideal for planetary, lunar, and compact deep-sky performance

  • Precision-machined housing for stable, reliable optical alignment

Specifications

Specification Details
Model/SKU FE03-125
Type 3x Focal Extender (1.25")
Magnification Factor 3×
Barrel Size 1.25" O.D.
Optical Configuration Fully multi-coated glass elements
Lens Treatment Edge-blackened lenses for reduced flare
Length Approx. 125 mm
Width Approx. 45 mm
Weight Approx. 345 g (12.2 oz)
Compatibility Standard 1.25" eyepiece holders and focusers
Included 1.25" focal extender unit
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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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