User manual CELESTRON NOBLE 10X28 Supplementary Guide

[. . . ] Using and Caring for Your Celestron® Binoculars Thank you for purchasing Celestron binoculars. We hope you will enjoy many years of pleasurable travel, birding, sports, racing, theater and hunting. [. . . ] Move the two halves of the binoculars about the hinge until you see one clear circle of image. Eyeglass wearers should roll down the rubber eyecups to obtain the maximum field of view. Adjusting Focus Since most people have a variance in vision from their left eye to their right, you must adjust the focusing system. Use the following steps to achieve focus: 1) Close your right eye and look through the left side of the binoculars with your left eye at the subject matter. Rotate the center focusing wheel until the image appears in sharp focus; 2) Close your left eye and look through the right eyepiece. Rotate the diopter (right) eyepiece until the image appears in sharp focus; 3) Now look through both eyepieces with both eyes open. Since you've already adjusted the right eyepiece, use only the center focusing wheel to refocus on a new object at a different distance. Now, attach the binocular strap (if you have not already done so) and you can begin using your Celestron binoculars. Care and Cleaning Binoculars do not need routine maintenance other than making sure the objectives and eyepieces are clean. If repairs become necessary, they should be serviced by the manufacturer or a qualified binocular repair company. Collimation (optical alignment) is the biggest concern with binoculars. If your binoculars are roughly handled or dropped, there is a good chance that the collimation will be out and they should be serviced. [. . . ] If you have multi-coatings there are special cleaning kits especially made for these. If you have a lot of dust or dirt accumulated, brush it off gently with a camel's hair brush and/or utilize a can of pressurized air. [. . . ]