F30070 ASTRONOMIC TELESCOPE SMARTPHONE ADAPTER ※ You can use mobile phones to take a good picture of the moon and stars. The focal length of the eyepiece combined with the focal length of the telescope determine the magnification power. To calculate the power of your telescope with any eyepiece, simply divide the telescope's focal length (300mm) by the eyepiece's focal length (marked "mm" on the eyepiece flange). For example, when you use the H20mm eyepiece with this telescope, the magnification will be 15X , and with a 3X Barlow lens, the magnification will be 45X . With 20mm eyepiece Magnification 15X With 6mm eyepiece and 3X Barlow lens magnification150X Eye Oblique mirror Horizontal movement lock Scope Finder 70 mm Aperture Easy To Install The tripod will get up first. Then attach the lens barrel. After attaching the lens barrel, install the viewfinder lens (initially locating the target object) on the lens barrel, and then install the eyepiece (eyepiece 2 select 1). Insert the viewfinder, eyepiece, and 1.5X straightening eyepiece. Adjust the focus knob to see a clear image. After finding a big target and then debugging with different glasses. When using a 3-fold Barova mirror, install the Barova mirror first, then the eyepiece. (To install the Barova mirror, you need to remove the cap from the device that installs the eyepiece. ) Note: Two glasses (H6mm, H20mm) can only choose one to install at the same time. Only 2 magnifiers (3 x Bar mirror and 1.5 x mirror) can be selected at a time. PRECAUTIONS: Do not observe the sun directly with your naked eye, and use sunscreen to observe the sun, otherwise it will damage your eyes. This telescope comes with two different magnifying eyepieces, an erecting eyepiece and a 3X Barlow lens, so you can freely mix and adjust the magnification up to a maximum magnification of up to 150X, allowing you to observe objects of different distances and sizes. Suitable for novice astronomy enthusiasts, beginner astronomers. SPECIFICATION: Brand: Eyebre Model: F30070 Structure: Monocular Function type: Normal telescope Uses: Astronomical telescope Instrument magnification: 150X Focal length: 300 mm Focal length: 4.29 Eyepiece: 20 mm, 6 mm Multiplier: 3X / 1.5X Finder Mirror: 5x24 Field of view: 1.2 Optical system: Refractive system Tripod: Aluminum alloy tripod Weight with packaging: 1.65 kg