Compatible with large eyepieces

Outer barrel diameter max to 42mm; big enough for most Plossl, some UWA and zoom eyepieces

Built-in sliding rail

Variable range is 32mm, long enough for different eyepiece focal length; allows you to vary the magnification without changing the inserted eyepiece when performing eyepiece projection astrophotography

Camera T-rings threads

Easy to connect the camera body to the reflector and refracting telescope. T ring mates perfectly, screwing on smoothly.
For Canon:Compatible with all Canon "EOS" Film or Digital SLR & DSLR Cameras including (digital models) 1D (all), 5D (all), 6D, 7D, 10D, 20D, 20Da, 30D, 40D, 50D, 60D, 60Da, 70D, 100D, 300D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 1000D, 1100D, D30, D50, D60, Rebel, Rebel XT, Rebel XTi, Rebel XS, Rebel XSi, Rebel T1, Rebel T1i, Rebel T2. Rebel T2i, Rebel T3, Rebel T3i, Rebel T4, Rebel T4i, Rebel T5, Rebel T5i, X6i, SL1.

For Nikon:Fits all Nikon SLR / DSLR Models. including: D1, D2, D3, D3S, D3X, D35, D4, D40, D40X, D50, D60, D70, D80, D90, D100, D200, D300, D300S, D600, D700, D750, D800, D800E, D810, D3000, D3100, D3200, D5000, D5100, D5200, D7000, D7100,
etc.

The Variable Universal Camera Adapter is composed of two detachable parts

Laser Engraved Markings;Fully Metal Design

Markings on the side for accurate adjustment and length recording.
All metal, no plastic. Black anodized aluminum structure and CNC mechanism is sturdy and durable.

Brass Ring;Light elimination design

Thumbscrew in the extension tube holds the telescope eyepiece in place; Built-in protective brass ring to prevent the eyepiece barrel from scratch.
The threads are smooth, no burrs or snags. Build-in threads and black painted for eliminating lights.

Specifications:

1.Brand: SVBONY
2.Model: SV112
3.Material: Aluminum Alloy
4.Support Eyepiece Outside Diameter: 42mm Max
5.Variable Projection Range: 42mm
6.Thread on Up: M42*0.75
7.Thread on Under: M28.5*0.6
8.Color: Black
9.Net Weight: 350g / 12.35oz / 0.771lb