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SVBONY SV131 25mm 48° Plössl Eyepiece - 1.25"

by SVBONY
SKU SV-W9101E
CA$27.00 - CA$27.00
CA$27.00
CA$27.00 - CA$27.00
CA$27.00
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  • Classic 4-Element Plössl Optical Design
  • Available in 6, 12, 17, 25, and 40mm Focal Lengths
  • Standard 1.25-Inch Barrel Format
  • Fully Multi-Coated (FMC) Optics
  • Accepts Standard 1.25" (M28.5*0.6) Filters
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Svbony SV131 1.25" Plossl Eyepiece (6/12/17/25/40mm)

    The Svbony SV131 1.25" Plössl Eyepiece series packages a classic 4-element optical design into a modern, all-metal housing suitable for any telescope with a 1.25-inch focuser. Each eyepiece in the series, including the popular 25mm model, features standard M28.5*0.6 filter threads, allowing you to easily attach nebula or light pollution filters to enhance your views of deep-sky objects.

    A 4-Element Design with Fully Multi-Coated Optics

    The SV131 eyepieces are built around the time-tested 4-element Plössl optical configuration, known for delivering sharp, high-contrast images. Svbony enhances this classic design with true full-bandwidth multi-layer coatings (FMC) on all air-to-glass surfaces. This treatment maximizes light transmission and, combined with matte blackened lens edges, effectively suppresses internal reflections and stray light for a cleaner, higher-contrast view.

    All-Metal Construction in a 1.25-Inch Barrel

    Durability is central to the SV131's design, which features an all-metal body and a chrome-plated 1.25-inch barrel that resists wear and provides a secure fit in your focuser. The interior of the barrel is matte-threaded to further reduce glare. For handling in the dark, an eco-friendly rubber anti-slip ring ensures a secure grip, preventing accidental drops during cold nights or when wearing gloves.

    Deep-Sky Viewing with M28.5*0.6 Filter Threads

    These eyepieces are well-suited for observing diffuse, low-surface-brightness targets like nebulae and star clusters. The design prioritizes a bright, clear field of view for comfortable, extended observing sessions. The inclusion of a standard M28.5*0.6 thread on the 1.25-inch barrel means you can easily add filters to combat light pollution or isolate specific wavelengths, making targets like the Orion Nebula (M42) or the Dumbbell Nebula (M27) stand out against the background sky.

  • Which Svbony SV131 focal length is best for locating objects in my 8" f/10 SCT?

    For an 8" f/10 SCT, the 40mm or 25mm SV131 Plössl would be your best choice for a low-power "finder" eyepiece. These focal lengths provide a wider true field of view, making it much easier to scan the sky and locate deep-sky objects before switching to higher magnification.

    Can I use filters with the Svbony SV131 eyepiece?

    Yes. All Svbony SV131 eyepieces feature a standard M28.5*0.6 thread on the inside of the 1.25-inch barrel. This allows you to attach any standard 1.25-inch astronomy filter, such as a light pollution filter, a nebula filter (like an O-III or UHC), or a colored planetary filter.

    What makes the SV131 Plössl a good choice for viewing the Andromeda Galaxy (M31)?

    The Andromeda Galaxy (M31) is a large, dim object that requires a bright, wide field of view. The SV131's fully multi-coated, 4-element optics deliver excellent light transmission, which is crucial for seeing the galaxy's faint outer arms. Using a lower-power model like the 40mm or 25mm will help you frame the entire galaxy in your field of view.

    Is the Svbony SV131 comfortable for long observing sessions?

    Yes, the SV131 series is designed for comfortable observation. While specific eye relief varies by focal length, the optical design is intended to reduce eye fatigue during extended viewing sessions, making them a practical choice for nights spent exploring star clusters and nebulae.

    What is the optical design of the Svbony SV131 eyepiece?

    The SV131 uses a classic Plössl design, which consists of four optical elements arranged in two groups (two cemented doublets). This design is highly regarded for providing sharp, high-contrast views, especially for planetary and deep-sky observation, with good control over chromatic aberration.

    How does the build quality of the SV131 hold up to frequent use?

    The Svbony SV131 is built for durability. It features an all-metal housing, a chrome-plated barrel to prevent scratching, and matte-blackened internal surfaces to improve contrast. The addition of a rubber grip ring also helps protect it from accidental drops, ensuring it can withstand regular use in the field.

  • Svbony 1-Year Warranty