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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Svbony SV136 Barlow 3x 1.25 inch
SVBONY SV136 3X Barlow Lens - 1.25"
Svbony SV136 Barlow 3x 1.25 inch

SVBONY SV136 3X Barlow Lens - 1.25"

by SVBONY
SKU SV-F9172C
$21.59 - $21.59
$21.59
$21.59 - $21.59
$21.59
Price Match Policy!
  • Triples eyepiece magnification by a factor of 3x
  • Fits standard 1.25 inch focusers and accessories
  • Achromatic 3-element, 2-group lens design minimizes color fringing
  • Features multilayer HD broadband green film coatings for high contrast
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Svbony SV136 Barlow 3x 1.25 inch

    The Svbony SV136 Barlow delivers a full 3x magnification increase to any 1.25 inch eyepiece, achieved through an advanced 3-element, 2-group achromatic lens structure. This design, combined with multilayer HD broadband green film coatings, ensures that the tripled power does not come at the cost of sharpness or color fidelity, providing high-contrast views of planetary surfaces and tight double stars.

    3-Element Achromatic Design: 3x Magnification with High Correction

    Unlike basic 2-element Barlows, the Svbony SV136 uses a more complex 3-element in 2-groups optical layout. This achromatic design actively corrects for chromatic aberration, preventing the distracting blue or yellow halos that can appear around bright objects like Jupiter or the lunar limb at high power. The result is a sharper, more color-pure image, allowing you to push magnification on nights of good seeing.

    • Achromatic Correction: The 3-element lens system significantly reduces false color for true-to-life views of planetary cloud bands and stellar colors.
    • Multilayer HD Coatings: Fully multi-coated optics maximize light transmission and suppress internal reflections, enhancing image brightness and contrast.

    Maximizing Detail in 1.25" Fast Telescopes

    This 3x Barlow is particularly effective in telescopes with short focal lengths, such as fast Newtonians or short-tube refractors. It allows you to reach the high magnifications needed for detailed planetary observation using longer eye-relief 1.25 inch eyepieces, which are far more comfortable to look through than very short focal length Plössls or orthoscopics.

    • Universal 1.25" Barrel: Slides into any standard 1.25" focuser or diagonal, making it compatible with a vast range of telescopes and eyepieces.
    • Secure Eyepiece Lock: A built-in set screw holds your eyepiece firmly in place, preventing any wobble or accidental slips during observation.

    Svbony SV136 3x vs. Standard 2x Barlows: When to Use More Power

    A 2x Barlow is a versatile workhorse, but a 3x Barlow like the SV136 is a specialist tool for when atmospheric conditions permit maximum magnification. On nights of steady seeing, the 3x factor can reveal finer details, such as the Cassini Division in Saturn's rings or subtle festoons in Jupiter's belts, that might be missed at 2x.

    The primary trade-off is sensitivity to atmospheric turbulence; a 3x Barlow will amplify poor seeing more than a 2x. However, for a dedicated planetary observer with a well-collimated telescope, the SV136 offers a critical step up in power for those fleeting moments of perfect atmospheric stability.

  • What is the advantage of the Svbony SV136's 3-element lens design?

    The 3-element, 2-group achromatic design provides superior color correction compared to simpler 2-element Barlows. This minimizes chromatic aberration (color fringing) on high-contrast targets like the Moon and bright planets, resulting in a sharper and more natural-looking image at high magnification.

    Is the Svbony SV136 3x Barlow a good choice for my 8-inch f/5 Dobsonian?

    Yes, it's an excellent match. An 8-inch f/5 Dobsonian has a focal length of about 1000mm. With a 25mm eyepiece, you get 40x magnification. Using the Svbony SV136 3x Barlow with that same eyepiece boosts the power to 120x, a great starting point for planetary detail, without requiring an uncomfortable short-focal-length eyepiece.

    When should I use the Svbony SV136 3x Barlow instead of a 2x for viewing Saturn?

    Use the Svbony SV136 3x Barlow on nights of very steady atmospheric seeing. While a 2x Barlow provides a reliable power boost, the 3x is for pushing your telescope to its limit. If the air is stable, the 3x magnification can make the Cassini Division in Saturn's rings appear as a sharp, black gap, a detail that might be less distinct at 2x.

    Will the Svbony SV136 3x Barlow work with my existing 1.25" eyepieces?

    Absolutely. The Svbony SV136 features a standard 1.25 inch barrel that is compatible with virtually all 1.25" telescope eyepieces, diagonals, and focusers from any brand. It includes a set screw to securely hold your eyepiece in place.

    How do the coatings on the Svbony SV136 Barlow improve the view?

    The lenses feature a multilayer HD broadband green film. These advanced coatings increase light transmission and drastically reduce internal reflections and glare. This leads to a brighter, higher-contrast image, which is crucial for seeing faint details on planetary surfaces.

    Can I use the Svbony SV136 3x Barlow for planetary imaging?

    Yes, it is very useful for planetary imaging. A 3x Barlow increases the effective focal length of your telescope, which enlarges the image of a planet on your camera's sensor. This allows you to capture more detail on small targets like Mars, Jupiter, and Saturn with a dedicated planetary camera.

  • Magnification Factor 3x
    Barrel Size 1.25 inch
    Lens Structure 3-Elements / 2-Groups, Achromatic
    Coatings Multilayer HD broadband green film
  • SVBONY 1-Year Warranty