Large aperture and focal distance for better visual feeling.Small size and light body with a storage bag, easy to carry and use.1.25inch eyepiece interface connecting with eyepiece/digital eyepiece/Barlows/focal reducer/Cameras and so on;Compatible with Equatorial/Altazimuth/Motor Drive.Can be used for astronomy(sun/moon)and viewing(with the 45degree erecting prism).Product Parameter?s:Clear Aperture: 90mmFocal Length: 1000mmMax Visual Power： 225XFocal Ratio： 11.1Resolution: 1.29"Limiting Magnitude: 11.7Light Grasp: 165xPositive Image: YesFinderscope: 5x24Eyepiece Interface: 1.25inchEyepiece Interface Thread: M42x0.75Eyepiece: K25mm(40X)/10mm(100X)Tube Size: 250x100mmWeight: 2.5kgEquatorial Mount Compatible: YesWaterproof: YesTripod: YesNote: Do not use this product to directly observe the strong light source such as the sun, otherwise it will cause permanent damage to your eyes! ?We recommand you use PL series eyepieces to improve visual feeling.Product Package:1pc Spotting ScopeSupport single camera, dual camera, three camera and four camera.