T-Rings, Spacers & Thread Adapters

M54 male threads on one side, M48 female threads on the other Zero-profile design preserves critical back focus Converts larger M54 ports to the c...

Connects Sony E-mount cameras to M48 accessories Provides a precise 36.7 mm optical length M48 (female) threads reduce vignetting on large sensors...

Connects M54 female threads to M48 female threads Adds only 2.0mm of back focus to your imaging train Standard 0.75mm thread pitch for wide compat...

Attaches Nikon F-mount lenses to ZWO cameras Standard M42x0.75 T-thread camera interface 29mm main body length for 17.5mm back-focus cameras Inclu...

Precision T-2 thread shims for rotational alignment Available in 0.3mm, 0.5mm, and 1.0mm thicknesses Ultra-thin design minimizes impact on back fo...

Connects 2" focusers to T-2 (M42x0.75) accessories Features a secondary M48 male thread for 2" filters Ultra low-profile design minimizes back foc...

Connects Canon EOS-EF Mount DSLR/Mirrorless cameras to telescopes Replaces the camera lens for direct, secure attachment Enables prime focus astro...

Connects T-threaded cameras to 1.25" focusers Standard M42x0.75 male T-threads Internally threaded for 1.25" astronomy filters Dur...

Connects full-frame DSLR and astronomical cameras to EdgeHD 9.25", 11", and 14" telescopes Features a wide M48 x 0.75 thread to eliminate vignetti...

Connects the ARCO 2" Rotator directly to the ESATTO 2" Focuser Creates a combined rotator thickness of just 21mm Maintains a wide 51mm free apertu...

M42 adapter for main imaging camera Specifications

Connects Sony E/NEX mount cameras to telescopes Ultra-short design adds only 8.3mm of optical length Features three connection standards: T-2, M48...

Connects Canon EF Lenses to M42 Female Threads Provides a Fixed 10mm Optical Path Length M42x0.75 Male "T-Thread" Interface Enables Wide-Field Ima...

Connects Canon EOS DSLR/Mirrorless cameras to Sky-Watcher reducers Features a wide M48 x 0.75 thread to prevent vignetting Engineered specifically...

Optical Length: 16.5mm Connection Side 1: M54x0.75 Male Thread Connection Side 2: M54x0.75 Female Thread Material: Anodized Aluminum Descriptio...

Adds exactly 15mm of optical path length M48 x 0.75 female and male threads Compatible with 2-inch filter systems Machined for modern, short back-...

Connects QHYCCD cameras to telescopes and accessories Provides multiple spacers for achieving correct back focus Ensures a rigid, threaded connect...

Connects female M48x0.75 threads to male T2 (M42x0.75) threads Solves common thread mismatches in imaging trains Durable, all-metal construction f...

Connects T2 (M42x0.75) Male Threads to 1.25" Barrels Non-Marring Brass Compression Ring Secure Single-Screw Locking Mechanism Durable, Low-Profile...

Connects M42 (T2) threaded cameras to 1.25" filters Adds only 1 mm of optical length to the imaging train Maintains critical back focus for correc...

Connects Canon EF lenses to ZWO Electronic Filter Wheels (EFW); EF-S lenses are not supported Engineered for ZWO cameras with 6.5mm back focus (e....

Adapts T-2 (M42x0.75) Threads to a 1.25" Barrel Integrates with the Baader Astro T-2 System Standard 1.25" Nosepiece Format Enables Connection of ...

Adds precisely 21mm of optical path length M54x0.75 male and female threads for secure connections Prevents vignetting with full-frame sensors Mac...

Connects Daystar Quark filters to M42 T-thread cameras Provides +/- 5 degrees of tilt to eliminate Newton's Rings Supports 17.5mm and 12.5mm back ...