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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.
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132
William Optics Fluorostar 132

William Optics Fluorostar 132

by William Optics
SKU WO-A-F132RDIII-RP33R
$4,378.00 - $5,668.00
$4,378.00
$4,378.00 - $5,668.00
$4,378.00
Price Match Policy!
  • 132mm Aperture, 910mm Focal Length (f/6.9)
  • Air-Spaced Triplet Apochromatic Objective
  • Premium FPL-53 Glass for Superior Color Correction
  • Heavy-Duty 3.7" Rack & Pinion Focuser
  • 360° Rotatable Focuser for Easy Framing
  • Fully CNC-Machined Aluminum Tube
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • William Optics Fluorostar 132 APO Refractor

    The William Optics Fluorostar 132 combines a 132mm aperture with a 910mm focal length (f/6.9) to serve as a premier instrument for high-resolution astrophotography and critical visual observation. Its air-spaced triplet objective lens uses premium FPL-53 glass to achieve apochromatic correction, while the massive 3.7-inch Rack & Pinion focuser provides zero-flexure support for full-frame imaging systems.

    132mm f/6.9 FPL-53 Triplet: Pure Color Correction

    At the core of the Fluorostar 132 is a three-element objective lens featuring FPL-53 glass, the gold standard for color error correction. This apochromatic design virtually eliminates chromatic aberration, ensuring there is no spurious purple or green fringing around bright stars like Vega or on the limb of Jupiter. With high-transmission STM coatings, the FLT132 delivers exceptionally high contrast, revealing subtle planetary details and rendering stars as sharp, color-pure points against a black-sky background.

    3.7" Rack & Pinion Focuser: 360° of Imaging Precision

    Designed for the demands of modern astrophotography, the FLT132 is equipped with a heavy-duty 3.7" rack and pinion focuser. This large-aperture focuser can carry heavy imaging trains—including large-format cameras, filter wheels, and off-axis guiders—without sagging or flexure. For perfect composition, the entire focuser assembly rotates a full 360 degrees, allowing you to frame targets like the North American Nebula (NGC 7000) exactly as you wish without ever loosening your camera.

    A Robust 132mm OTA with CNC-Machined Precision

    The optical tube is crafted from solid CNC-machined aluminum, providing a rigid and thermally stable platform essential for consistent focus through long imaging sessions. The powder-painted white tube is durable and presents a classic, clean aesthetic. Every Fluorostar 132 includes a high-quality soft carrying case, protecting your investment during transport to dark-sky sites and making this powerful 132mm refractor surprisingly manageable.

    FLT132 vs. Standard 130mm Refractors: The 3.7" Focuser Advantage

    While many refractors in the 130mm class deliver excellent optical views, the Fluorostar 132 sets itself apart with its imaging-centric design, most notably its focuser.

    • Typical Refractors: Many competitors use 2.5" or 3" focusers, which are adequate for smaller sensors but can become a bottleneck for flexure and illumination with larger cameras.
    • Fluorostar 132: The 3.7" focuser provides a wider, unvignetted light path for full-frame and larger sensors, especially when paired with a compatible reducer or flattener. Its robust build quality means you can invest in a heavy imaging setup without needing to budget for an immediate focuser upgrade.

  • How will the Fluorostar 132 perform on planetary targets like Jupiter with its 910mm focal length?

    The William Optics Fluorostar 132 is an excellent planetary instrument. Its 910mm focal length provides ample image scale for planets, and the FPL-53 triplet optics deliver the high-contrast, color-free views needed to resolve fine details like Jupiter's Great Red Spot, cloud bands, and the Cassini Division in Saturn's rings.

    Is the FLT132 suitable for imaging large deep-sky objects like the Andromeda Galaxy (M31) with a full-frame camera?

    Yes. At its native 910mm focal length, the FLT132 will frame the core of M31 beautifully. When paired with a compatible field flattener or reducer, it provides a flat, well-corrected field for full-frame sensors. The large 3.7" focuser is specifically designed to prevent vignetting and support the weight of a full-frame imaging setup.

    What makes the FPL-53 triplet objective in the Fluorostar 132 superior to a doublet?

    A triplet objective with FPL-53 glass corrects for chromatic aberration (false color) across a much wider spectrum than a standard doublet. This results in significantly higher contrast, sharper stars with no color fringing, and more faithful color rendition in astrophotos, which is especially critical for imaging and observing bright objects.

    What is the benefit of the 3.7" focuser on the William Optics FLT132?

    The 3.7" Rack & Pinion focuser offers two main advantages for astrophotography:

    • High Payload Capacity: It can hold heavy cameras, filter wheels, and other accessories without flexing or slipping, ensuring consistent focus.
    • Full Illumination: The large diameter prevents vignetting (darkening of the corners) on large camera sensors, such as full-frame DSLRs or dedicated astronomy cameras.

    What field flatteners are compatible with the FLT132?

    The William Optics Fluorostar 132 is designed to be compatible with several of their high-quality field flatteners and reducers, including the P-FLAT68III, P-Flat7A, and P-Flat8. Using one of these accessories is recommended for astrophotography to ensure pinpoint stars across the entire field of view.

    Does the Fluorostar 132 come with a case for transport?

    Yes, the William Optics FLT132 includes a high-quality soft carrying case. This padded case is designed to protect the telescope during storage and transport to your observing location.

  • Aperture 132mm
    Focal Length 910mm
    Focal Ratio f/6.9
    Objective Design Air-Spaced Apochromatic Triplet
    Objective Glass FPL-53
    Coatings STM Coatings
    Focuser 3.7" Rack & Pinion
    Focuser Rotation 360 degrees
    Tube Construction CNC-machined Aluminum
    Compatible Flatteners P-FLAT68III, P-Flat7A, P-Flat8
    Available Colors Red, Gold, Grey

    • Fluorostar 132 Optical Tube Assembly

      × 1

    • Soft Carrying Case

      × 1

  • William Optics 2-Year Warranty