Operation1. Mount the telescope on a tripod, adjust the angle, remove the dust cap and attach the eyepiece.2. Align the viewfinder area with the object and place it in the center of the field of view.3. Slowly turn the focus wheel until a bright, clear image is displayed.Information on magnification: The focal length of the eyepiece in combination with the focal length of the telescope determines the magnification strength. To calculate the performance of your telescope with a specific eyepiece, simply divide the focal length of the telescope (300 mm) by the focal length of the eyepiece (indicated in "mm" on the eyepiece collar). For example, if you use the H20mm eyepiece with this telescope, the magnification will be 15 times and with a 3x Barlow objective it will be 45 times.Technical data:Aperture: 125 mmFocal length: 700 mmMaximum magnification: 350XEyepiece: H6mm, H20mm, F12mmPackage list:1 * telescope main tube1 * H6mm eyepiece1 * H20mm eyepiece1 * F12mm eyepiece1 * 1.5X Zenith mirror1 * 2X Barlow lens1 * tripod