Optec Inc. Optec-DSI 3.5x24tpi knurled female threaded retaining ring
$30.00
Optec Inc. Optec-DSI 3.5x24tpi Knurled Female Threaded Retaining Ring
Innovative Joint Development: Created by Deep Sky Instruments and Optec, enhancing functionality for large aperture telescopes.
Astro-Physics Thread Standard: Adheres to the AP 2.7-inch thread, a benchmark in the astronomy industry established by Astro-Physics.
Optimal Light Transmission Design: Specifically designed to overcome the light clipping issues of the AP2.7 spacers, offering improved light passage.
High-Quality Material Construction: Crafted from 6061 aluminum alloy, known for its strength and durability, and finished with a black anodized coating for additional protection.
Versatile and Stackable Extensions: Features female threads and knurled bases, allowing for easy attachment, detachment, and stacking of extension tubes.
Precise Length Variations: Part of a versatile set offering critical extensions in 1/4" (6.35mm) increments, catering to fixed focal length telescope requirements.
Minimized Internal Reflections: Equipped with anti-reflective threading and internal baffles to significantly reduce internal light reflections, optimizing telescope performance.
Non-Reflective Internal Coating: All internal surfaces are coated with ultra-flat black paint, preventing any reflective disturbances and enhancing image quality.
Comprehensive Set Options: Available in multiple lengths (including ½”, ¾”, 1", 1-1/2", and 3") for a wide array of spacer combinations, ensuring broad compatibility with various telescope models.
Robust and Practical Design: The knurled feature on the female threaded retaining ring offers ease of use and secure fitting, making it ideal for astronomers and astrophotographers looking for reliable telescope extensions.
