: 1. Mount the on a tripod, adjust the angle, remove the dust cover, and attach the eyepiece. 2. Align the finder scope with the object, make it in the center of the field of view. 3. Rotate the focus wheel slowly until see a bright, clear image. About Magnification: The focal length of the eyepiece, combined with the focal length of the , determine the magnification . To calculate the of your with any particular eyepiece, simply divide the focal length of the (300mm) by the focal length of the eyepiece (indicated in “mm” on the eyepiece collar). For example, when you use the eyepiece H20mm with this , the magnification will be 15X, and with a 3X Barlow lens, the magnification will be 45X. Do not try to ob the sun directly through the , it will continue to damage your eyes Specifications: Aperture: 80mm Focal Length: 500mm Max Magnification: 150X Eyepiece: H10mm, H25mm Optical: Refraction Package List: 1 * Main Tube 1 * H10mm Eyepiece 1 * H25mm Eyepiece 1 * 3X Barlow Lens 1 * Tripod