This versatile 50mm aperture guide scope with a built-in helical focuser for precise focusing of potential guide stars.Designed for use with the guider CCD astronomy camera or eyepiece. It is an ideal accessories to any astrophotographers. Extinction design of telescope. Taper matt tooth and spray matting paint design can greatly reduce the light loss of light in the entire lens barrel, making the image clearer and sharper; Unique design with double protection to avoid loss of light, making the images you observe clearer and sharper. Lightweight and portable. 604g and 240mm total length that is very small and compact autoguiding system adds hardly any weight to an astrophotography setup. Do you want to keep the beautiful and interesting view of your telescope or microscope;the SVBONY telescope camera adapter help you do this easily. You can attach your camera to your telescope conveniently since using this adapter combination. Compatible with Canon EOS & Rebel SLR & DSLR Cameras. Note: it doesn't fit for EOS-M models. T thread interface: Ring attaches securely to camera body and provides a T thread interface. Connect the T-ring mount and T-Mount by M42 threads: Both the adaptor are universal M42x0.75mm. 1.25" diameter T adapter: Fits all standard 1.25" telescopes and microscope. T2 T ring adapter: Useful accessory allows you to attach camera to a telescope camera adapter;and other astrophotography accessories.