The more you practice this skill, the easier it becomes to use the Telrad. And a side benefit will be that you improve your own ability to judge angular separations. The template may be placed over the chart to help one navigate across the sky. You may purchase any of a number of commercial star charts which include such an overlay, or you may buy an optional overlay, or make one yourself with the aid of a mechanical drawing compass possibly drawn over a chart printed from a computer planetarium program. These pages are spiral bound and open easily to any page.
Specifications are subject to change without notice.