Your 100mm f/9 ED has been designed with high quality optics and excellent mechanical construction. The ED glass in the objective lens means you’ll enjoy images with far less color distortion than those seen in a standard refractor, and the smooth Crayford focuser will make getting sharp images a breeze. These instructions will help you set up and use your telescope tube. Getting Started The 100mm f/9 ED comes fully assembled from the factory. The telescope’s optics have been installed and colli

Congratulations on your purchase of a quality Orion spotting scope. Your TrailHead zoom spotting scope is a high-quality optical instrument for viewing birds, wildlife, sports events, or anything else you want to see more closely. It will provide many years of superb, enjoyable viewing. Before using your spotting scope, we recommend that you read through the following instructions. Please refer to Figures 1 and 2 above to identify the various parts mentioned in this manual. Attaching to an Optio

Rotate the focus knob with your fingers until the object comes into sharp focus. Go a little bit beyond sharp focus until the image just starts to blur again, and then reverse the rotation of the knob, just to make sure you’ve hit the exact focus point. Using the Zoom Eyepiece The TrailHead zoom spotting scope line provides continuous zoom magnification of either 15-45x (on the 65mm) or 20x to 60x (on the 85mm). The magnification is adjusted by rotating the knurled rubber zoom ring on the eyepie