Enhance your astrophotography setup with this high-precision Telescope Adapter Ring, designed to seamlessly connect M42 and M48 fittings with ease. Crafted from durable aluminum alloy, this adapter ring ensures long-lasting performance and reliable stability for your telescope accessories. Featuring an M42x0.75mm external thread and an M48x0.75mm internal thread, it enables secure coupling between different lens filter sizes or camera accessories, expanding your equipment compatibility. Key Features: · Seamless Connection: Perfectly mates M42 and M48 fittings, allowing you to combine multiple components smoothly without gaps or misalignment. · Precise Thread Specifications: Equipped with an M42x0.75mm external thread (commonly known as T2 thread) and M48x0.75mm internal thread for standardized compatibility. · Premium Aluminum Alloy Construction: Provides robustness and durability while maintaining a lightweight profile for easy handling and transport. · Extinction Treatment Inner Wall: The adapter’s inner surface is treated to reduce radiation and stray light interference, enhancing image clarity and reducing flare during observations or photography. · User-Friendly Installation: Designed for quick and effortless attachment or removal, ensuring flexibility and convenience during setup or field use. Specifications: · Material: Aluminum Alloy · Internal Thread Specification: M48 x 0.75mm · External Thread Specification: M42 x 0.75mm (T2 Thread) · Thread Depth: 3mm · Flange Distance: 4mm · Total Length: 7mm · Inner Hole Diameter: 39mm · Outer Frame Diameter: 50.7mm ± 0.1mm Package Includes: · 1 x Telescope Adapter Ring This telescope adapter ring is an essential accessory for astronomers and astrophotographers seeking to expand their gear compatibility with a sturdy, precision-engineered solution. Its extinction-treated inner wall ensures optimal image quality by minimizing radiation interference, making it ideal for both observational use and astrophotography.