Main features: 2. This 70F6 ED refracting mirror is an ideal telescope, weighing only about 2.22 kilograms, and due to its retractable cover, its length is only 301mm/11.85 inches. The 3.2inch RAP (gear rack) focusing device can safely accommodate heavy photography accessories. 5. Recommended for advanced use: Telescopes are suitable for experienced observers as well as aspiring beginners. 6. Application areas: astrophotography, moon and planets, natural observation, nebulae and galaxies. 7. Accompanying accessories: 2inch to 1.25inch eyepiece adapter, dew cover, lens cover, 1.25inch dust cover, 150mm dovetail plate, and optical tube ring. Specifications: optics 1. Type: Refractive mirror 2. Build type:Achromatic dual lens 3. Glass grade: S-FPL51 4. Aperture: 70mm/2.75 inches 5. Focal length: 420mm 6. Aperture ratio: f/6 7. Resolution: 1.97“ 8. Limit value: 11.3 9. Focusing ability: 100x 11. Tube weight: 2.22kg 12. Outer diameter of the pipe: 88mm 13. Pipe material: Aluminum 14. Coating: SMC Focusing device: 1. Construction type: RAP (Gear and Rack) 2. Connection: 2 inches 3. Connect threaded socket: M54 * 0.75 4. Ring clamp: Yes 5. Rotation: Yes 6. Reduction ratio: 1:10 for fine motion Packaging includes: SV503 70F6 ED astronomical telescope OTA Paired telescope tube ring 2 "-1.25" adapter Swallowtail board Lens cover 1.25 "dust cover