Optec, Inc.

  Optec Inc. AP2.7 x 24tpi Extension Tube Set: Versatile and Robust for Precise Telescope Adjustments Industry Standard Compatibility: Designed to extend the functionality of the AP2.7 inch thread, an...

  Optec Inc. AP2.7 x 24tpi to T-thread Adapter: Precision Connection for Advanced Imaging Specialized Thread Conversion: Converts AP2.7 male thread to T-thread (M42x0.75mm male thread), facilitating the integration of...

  Optec Inc. AP2.7 x 24tpi to M54 x 0.75mm Thread Adapter: Seamless Connectivity for Astrophotography Thread Adapter Design: Specifically crafted to convert AP2.7 x 24tpi male thread to M54...

M90 x 1mm female thread to AP2.7 Female threaded adapter. Converts GSO / AstroTech AT8RC spacer tubes to AP2.7 standard.

  Optec Inc. AP2.7 to OPTEC-2400 Adapter: Bridging Astro-Physics and OPTEC Devices AstroPhysics Thread Compatibility: Designed to seamlessly screw into the AstroPhysics 2.7-inch (AP2.7) female thread, ensuring a secure and...

Custom adapter for STL threaded extensions. Specify length up to 60mm.

STL thread to SCT thread adapter. Specify length up to 60mm. Female STL thread to male SCT 2"x24tpi thread. Custom length = xx.x mm for proper back-focus spacing.

STL 2.156x24tpi thread to T-thread adapter. Female STL thread to male T-thread adapter.

T-thread to M65 Expansion Ring. Female M42x0.75mm to male M65x1mm adapter

T- to C-mount adapter, female T-thread to male C-mount adapter

STL knurled locking ring fits 2.156”x24tpi STL male thread.

T-thread to STL thread expansion ring. Female T-thread to male STL thread. Includes #19852 lock retaining collar.