Specification Brand : DCYEQRQ BulletPoint1 : Linear field of view; 1000 yards/m: 61 ft (19 m), exit pupil diameter: 2.2 mm fractional rate ≤ 4.0 BulletPoint2 : Viewing angle: 1.30 degrees, tracking system: platform type equatorial BulletPoint3 : 1 eyepiece: 10mm magnification: 40x, distortion; 4.9%, concentration; 73.5x BulletPoint4 : Main mirror length: 57cm, caliber: 70mm, focal length: 400mm, focus ratio: F5.7 BulletPoint5 : Satisfaction Quality: If You Have Any Questions About the Product and Service, Please Feel Free to Contact Us, We Will Do Our to Help You in 24 Hours! Color : B ExternallyAssignedProductIdentifier : 5399469279948 ExternallyAssignedProductIdentifier1 : 5399469276817 ExternallyAssignedProductIdentifier2 : 5399469731477 ItemName : DCYEQRQ Professional Stargazing Telescope, High-Powered Telescope, Large-Diameter Telescope, High-Definition Telescope, Student Adult Telescope, Space Telescope (B Telescope) (C Telescope) ItemPackageQuantity : 1 ItemTypeKeyword : refracting-telescopes Manufacturer : DCYEQRQ PartNumber : wyh2408150505 ProductDescription : 1. The refractor has a strong focal length, a large field of view, and a strong resolution.Multilayer optical coating,Refractive optical system,high light transmittance, and enhanced image brightness and clarity.Aluminum tripod 2. It is very suitable for astrometric work, and it performs well in observing the moon, planets, and binary stars. Easy to observe the ground view, very suitable for enlarged photography of the moon and planets 3. The telescope is suitable for beginners or children. It is easy to install and observe for beginners. It will encourage children to like learning space, get close to nature and stay away from electronic products. And provide a wonderful holiday or birthday gift idea for children who like science and astronomy. 4. If you have any questions about quality after receiving this space telescope, please contact us for the first time. We provide a high standard of 24/892 customer service, and will do our best to solve it for .