【Strong Compatibility】：Telescope Mount T-Adapter Ring for is Useful accessories allow you to attach your Suitable for camera to a telescope with an eyepiece diameter of 1.25 inches ( for D90, D80, D70, D60, D50, D40x, D40, D800, D700, D600 , D300s, D300) mount, D200, D100, D7000, D5200, D5100, D5000, D3200, D3100, D3000, D4, D3x, D3s and all for SLR cameras). 【How to Use】：1. Connect the T-ring bracket and the T-bracket with M42 threads. 2. Mount the device on your for camera. 3. Connect the camera to the device with a 1.7''(31.7 mm) wheel on the T-bracket with the telescope. Tighten the screws on the 1.25'' adapter. Make sure they are locked and secure. 4. Put the camera on and calibrate the focal length to get a clear picture. 【Excellent Photo Experience】：This telescope T-adapter ring,Lens Adapter Ring Convertercontains a T-ring for cameras and a 1.25in T-mount, Inner ring can be rotated to keep lens sturdy and stableUse this telescope adapter to capture very nice sky photos, get clear photos, and good image quality. 【Excellent Performance】：1.25in Astronomical Telescope Mount Adapter,Telescope Adapter Ring helps to attach your Camera to the telescope which has 1.25 inch eyepiece diameter; Easy and smooth for you to use.Perfect for shooting. 【High Quality Aluminium Alloy】：The T-ring adapter for telescope adopts aluminum alloy structure , which is wear-resistant and rust proof, with high strength and durability.