Binorum SuperStrong M48 20mm Extension Tube
Professional Backfocus Solution for Astronomy
The Binorum SuperStrong M48 extension tube represents an essential accessory for every astronomer who requires precise backfocus adjustment of their telescope. With a 20mm length, it provides optimal distance for achieving proper focus when using various astronomical accessories.
This extension tube is manufactured from high-quality materials that guarantee long-term durability and stability during observations. The double M48 threading on both ends allows easy connection between telescopes and other optical components such as eyepieces, cameras, or filters. The SuperStrong construction ensures mechanical precision and minimizes internal light reflections.
Key Features and Specifications
- Length: 20mm for optimal spacing
- Threading: M48 x 0.75 on both ends
- Material: High-grade aluminum with black anodized finish
- Weight: Approximately 45 grams
- Internal diameter: 44mm for unobstructed light path
- Compatible with standard M48 astronomy equipment
Precision Backfocus Adjustment
Backfocus adjustment is crucial for achieving sharp imaging, especially in astrophotography or when using heavier accessories. This extension tube allows fine-tuning of the distance between the telescope's primary mirror and the focal point, which is essential for optimal performance of the optical system.
The precise machining ensures that the optical axis remains perfectly aligned when the tube is inserted into the optical train. This eliminates potential sources of aberrations and maintains the telescope's optical quality throughout the extended focal length.
Applications and Compatibility
Thanks to the standard M48 threading, this extension tube is compatible with most modern astronomical telescopes and accessories including:
- Schmidt-Cassegrain and Maksutov-Cassegrain telescopes
- Refractor telescopes with M48 focusers
- CCD and CMOS astronomy cameras
- Filter wheels and filter systems
- Field flatteners and focal reducers
- Off-axis guiders and flip mirrors
Professional Build Quality
The SuperStrong design philosophy emphasizes mechanical stability and optical performance. The tube features thick walls that resist flexure under load, while the precision-machined threads ensure smooth assembly and disassembly. The internal surfaces are blackened and threaded to minimize stray light and reflections.
Compact dimensions and low weight don't compromise system stability, while precisely machined threaded connections guarantee secure and reliable attachment of all components. The 20mm extension length is ideal for most common backfocus adjustments without adding excessive length to the optical train.
Why Choose Binorum Brand
Binorum was created by astronomers for astronomers with emphasis on highest quality and reliability. Years of experience with sky observation are reflected in every product, designed to meet the demanding requirements of the astronomical community. Binorum offers a comprehensive range of astronomy accessories, from simple adapters to complex optical systems, always with focus on precision and long-term functionality. Each product undergoes thorough testing to ensure reliability under demanding observation conditions. The brand's commitment to quality means that every Binorum accessory is built to withstand the rigors of serious astronomical use while maintaining optical excellence that professional and amateur astronomers depend on.
