SVBONY FUSW9118B Extension Tube Optical Total SV157 1.25 40MM 70MM

( Brand: Svbony ), ( Manufacturer Part Number: FUSW9118B ), ( Part Type: Tube ), ( Size: 70mm )

Review SVBONY Extension Tube 1.25 Inch Optical Length 40mm Total 70mm

The SVBony FUSW9118B SV1.25 Extension Tube is an essential accessory for astrophotography enthusiasts and advanced imaging hobbyists. This tube is specifically designed for use with SVBony SV157 refractor telescopes, or any other telescope with a similar focal length.

The tube is constructed from high-quality optical glass, ensuring excellent image quality and minimal optical distortion. It measures 40mm in length when retracted and 70mm in length when fully extended, providing an additional focal length to your telescope for closer-up observations or photography.

The SVBony FUSW9118B SV1.25 Extension Tube features a thread diameter of 1.25 inches (31.75mm) and a thread pitch of 0.80mm, ensuring a secure and accurate fit with compatible telescopes. The tube is also multi-coated with high-transmission anti-reflection coatings, improving light transmission and reducing internal reflections for enhanced image clarity.

This extension tube is an excellent tool for astrophotography, enabling you to capture detailed images of planets, the Moon, and other celestial objects. It can also be used for macro photography or other close-up applications, making it a versatile addition to any imaging setup.

The SVBony FUSW9118B SV1.25 Extension Tube is constructed from durable materials and is designed to withstand the rigors of frequent use. It is also easy to use, simply screw it onto the front end of your telescope or camera lens and securely lock it in place.

In summary, the SVBony FUSW9118B SV1.25 Extension Tube is a high-quality and versatile accessory for astrophotography and advanced imaging applications. Its optical glass construction, thread compatibility with SV157 refractor telescopes, and multi-coated anti-reflection coatings ensure excellent image quality and minimal optical distortion.

The SVBony FUSW9118B SV157 extension tube is a 1.25-inch diameter optical tube with a total length of 70mm, which is designed to increase the focal length of telescopes or camera lenses. Here are some potential pros and cons of buying this extension tube:

1. Increases Magnification: By adding length to the optical path, this extension tube can increase the magnification of your telescope or camera lens, allowing you to see more detail in your observations.

2. Versatile: This tube can be used with a variety of telescopes and camera lenses, making it a versatile addition to an observing or photography setup.

3. High Quality Glass: The SVBony FUSW9118B SV157 extension tube is made of high-quality optical glass, ensuring that the images you capture are clear and sharp.

4. Affordable: Compared to other extension tubes on the market, this one is relatively affordable, making it a cost-effective way to increase magnification.

1. Reduces Light: Adding length to the optical path reduces the amount of light that reaches the eyepiece or sensor, which can make observations or images darker.

2. Requires Careful Alignment: To get the best possible results, the extension tube must be carefully aligned with the telescope or camera lens, which can be time-consuming and require some skill.

3. May Introduce Chromatic Aberration: Extension tubes can introduce chromatic aberration, which is a type of optical distortion that can cause color fringing around the edges of objects.

The SVBony FUSW9118B SV157 extension tube is a useful and versatile addition to any telescope or camera setup, offering increased magnification and high-quality optics. However, it does come with some potential drawbacks, such as reduced light and the potential for chromatic aberration. Ultimately, whether or not this extension tube is worth the investment depends on your specific observing or photography goals and your willingness to deal with these trade-offs.

If you are looking to increase the magnification of your telescope or camera setup and are willing to deal with the potential drawbacks of an extension tube, then the SVBony FUSW9118B SV157 extension tube could be a good option for you. However, if you are concerned about light loss or chromatic aberration, you may want to consider other alternatives, such as Barlow lenses or telephoto lenses. It is important to weigh the pros and cons carefully before making a purchase to ensure that you are getting the best possible tool for your observing or photography needs.

Details:

Telescope Mount: 1.25 inches mount. Compatible Devices: Telescope, Camera, Filter. Product Dimensions: 4x 2 W. Focus Type: Manual.

With a brass compression; with compression INS to prevent the marring of your telescope accessories. Manufacturer: SVBONY. Optical Tube length : 70 Millimeters. Objective Lens Diameter: 70 Millimeters.

Finder scope: Reflex.

part #: fusw9118b prices

• $20.95-$21.99

specifications scopeadapta:

• brand: Svbony
• mpn: Fusw9118b
• part type: Tube
• size: 70mm

seller scopeadapta:

• rating: 98.5%
• # reviews: 1320
• city: San Bernardino, CA

shipping scopeadapta:

• class: Expedited, One-day
• cost: $0.00
• service: Expedited, Overnight
• transit: 4-6 Days
• type: Fixed

returns scopeadapta:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer scopeadapta:

• started: August 7, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 2

payments scopeadapta:

• wallet: Apple-pay
• other
• credit card: Mastercard

general scopeadapta:

• condition: New
• Binoculars Telescopes > Telescope Parts Accessories > Telescope Adapters

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