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William Optics 2x Barlow Nosepiece for Binoviewer

William Optics 2x Barlow Nosepiece for Binoviewer

by William Optics
SKU WO-E-BINO-B2
$59.00 - $59.00
$59.00
$59.00 - $59.00
$59.00
Price Match Policy!
  • Provides 2x magnification
  • Enables binoviewers to reach focus in most telescopes
  • Standard 1.25" nosepiece format
  • Threads directly onto the binoviewer body
  • Solves insufficient back-focus travel issues
6 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • William Optics 2x Barlow Nosepiece for Binoviewer

    The William Optics 2x Barlow Nosepiece for Binoviewer is a purpose-built optical corrector designed to solve the single most common obstacle to two-eyed observing: achieving focus. This 1.25" nosepiece provides the critical 2x optical amplification required to extend your telescope's focal point, allowing it to meet the long light path of a binoviewer.

    Achieve Focus at 2x: The Essential Binoviewer Accessory

    Many telescopes, particularly Newtonians and some refractors, lack the necessary inward focuser travel (back focus) to accommodate the long optical path of a binoviewer. This nosepiece acts as a Barlow lens and optical path corrector, pushing the focal plane outward so your focuser can reach it. The result is a sharp, focused image where one was previously impossible, making this accessory essential for using your binoviewer on a wider range of instruments.

    Secure 1.25" Thread-In Design for Stability

    Unlike a standard Barlow lens that drops into a focuser, the William Optics 2x Barlow Nosepiece threads directly onto the body of the binoviewer itself, replacing the standard 1.25" nosepiece. This direct, threaded connection creates a solid and secure optical train, eliminating the potential for sag, flexure, or misalignment that can occur when stacking separate components. This ensures your eyepieces and the binoviewer remain perfectly collimated with the telescope's optical axis.

  • Why do I need a special 2x Barlow Nosepiece for my William Optics binoviewer?

    A binoviewer has a long optical path due to its internal prisms. Most telescopes don't have enough inward focus travel to compensate, meaning you can't achieve a sharp image. The William Optics 2x Barlow Nosepiece extends the telescope's focal point outward, allowing your focuser to reach it. It's an essential corrector for enabling binoviewer use on many telescope designs.

    Will this 2x Barlow Nosepiece work with binoviewers from other brands?

    While designed for William Optics binoviewers, this 2x Barlow may be compatible with other models that use a standard thread for a removable 1.25" nosepiece. However, compatibility is not guaranteed, as threading and optical path lengths can vary between manufacturers.

    How will the William Optics 2x Barlow Nosepiece affect views of Jupiter in my 8" SCT?

    An 8" SCT already has a long focal length, and this 2x Barlow will double it, providing very high magnification. This is ideal for resolving fine details in Jupiter's cloud bands, the Great Red Spot, and transits of its moons. You will need steady atmospheric seeing conditions to take full advantage of the high power.

    Can I use the 2x Barlow Nosepiece for deep-sky objects like the Hercules Cluster (M13)?

    Yes, but with a trade-off. The 2x magnification will make the background sky darker and can help resolve individual stars in the core of a bright globular cluster like M13. However, it will also significantly narrow your field of view and dim the image, making it less suitable for large, faint objects like nebulae or galaxies.

    Does this William Optics nosepiece thread into the filter threads of my existing nosepiece?

    No. The William Optics 2x Barlow Nosepiece is designed to completely replace your binoviewer's existing 1.25" nosepiece. You must first unthread and remove the standard nosepiece from the binoviewer body before threading this Barlow nosepiece in its place.

    Is the only purpose of the William Optics 2x Barlow Nosepiece to reach focus?

    Its primary purpose is to enable focus, but it also functions as a quality 2x Barlow lens. By doubling your magnification, it allows you to achieve the high powers necessary for detailed lunar and planetary observation, effectively expanding the utility of your eyepiece collection when using the binoviewer.

  • Product Name William Optics 2x Barlow Nosepiece for Binoviewer
    Magnification Factor 2x
    Barrel Size 1.25"
    Connection Direct thread-on to binoviewer body
    Primary Application Binoviewer In-Focus Corrector

    • William Optics 2x Barlow Nosepiece for Binoviewer

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  • William Optics 2-Year Warranty