Meade Polaris 130mm User Manual - Page 22

To inspect the view of the mirror collimation, look down the focuser draw 20 tube with the eyepiece removed. The edge of the focuser drawtube (1, Fig. 14), will frame the reflections of the primary mirror with the 3 mirror clips (2, Fig. 14), the secondary mirror (3, Fig. 14), the spider vanes (4, Fig. 14), and your eye (5, Fig. 14). Properly aligned, all of these reflections will appear concentric (i.e., centered) as illustrated in Fig. 14. Any deviation from the concentric reflections will require adjustments to the secondary mirror assembly and/or the primary mirror cell (Fig. 12). B. SECONDARY MIRROR HOLDER ADJUSTMENTS If the secondary mirror (1, Fig. 15) is centered in the draw tube (2, Fig. 15), but the primary mirror is only partially visible in the reflection (3, Fig. 15), one or more of the 3 Phillipshead secondary mirror collimation screws need adjusting. First, unthread each of the secondary mirror collimation screws slightly to the point of where you can tilt the secondary holder from side-to-side. By Looking at or near the Sun will cause irreversable damage to your eye. Do not point this telescope at or near the Sun. Do not look through the telescope as it is moving.