Gskyer 70mm Astronomical Refractor Telescope This 70x400mm refractor telescope can be a good observation of celestial bodies and terrestrial objects - best for viewing lunar and planetary. Featuring all coated glass optical components, the travel scope provides clean, crisp views. Developed with the traveler in mind, this travel scope features a compact and portable design perfect for the on-the-go sky gazer. Specification: ? Type: Refractor ? Objective Lens: 70mm(2.75") ? Focal Length: 400mm(f/5.7) ? Mount: Altazimuth ? Eyepiece: Low: 25mm(16X), High:10mm(40X) ? Barlow lens: 3X ? Max Magnification: 120X ? Finderscope: 5×24 with cross-hair lines ? Zenith Mirrors: 48°Erecting BAK4 prism ? Tripod: 65cm(31.5") height adjustable Aluminum tripod Warm Tips: ?If it shows a blurred picture, please adjust focus using focus wheel. ?When observing an outdoor target with an astronomical telescope indoors, do not close the window to avoid the deformation of the image caused by the reflection of the window glass. ?Use a telescope outdoors, please wait for the temperature of the product is the same as the outdoor temperature, the performance will be better. ?Avoid accidentally taking the telescope into a larger temperature difference environment because the moisture in the air will condense on the objective. ?NEVER aim your telescope at the sun or even close to the sun!