Meade114EQAR 3/28/07 9:52 AM Page 20
must be unthreaded slightly to the point of where you can tilt the diagonal
18holder from
tilt until you see the primary mirror become as centered in the reflection of the diagonal mirror as possible. Once you are at the best position, thread in the 3
of alignment).
C. PRIMARY MIRROR ADJUSTMENTS
If the diagonal mirror (1, Fig. 16) and the reflection of the primary mirror (2, Fig. 16) appear centered within the drawtube (3, Fig. 16), but the reflection of your eye and the reflection of the diagonal mirror (4, Fig. 16) appear off center, you will need to adjust the primary mirror tilt
the primary mirror cell (3, Fig. 13). These primary tilt screws are located behind the primary mirror, at the lower end of the main tube. To adjust the primary mirror tilt screws, first unscrew several turns, the 3
D. STAR TESTING THE COLLIMATION
With the collimation performed, you will want to test the accuracy of the alignment on a star. Use the 25mm eyepiece and point the telescope at a moderately bright (second or third magnitude) star, then center the star image in the telescope's
•Bring the star image slowly out of focus until one or more rings are visible around the central disc. If the collimation was
performed correctly, the central star disk and rings will be concentric circles, with a dark spot dead center within the
•If the
•To adjust the primary mirror tilt screws (3, Fig. 13), first unscrew several turns the 3
•Using the flexible cable controls move the telescope until the star image is at the edge of the
•As you make adjustments to the primary mirror tilt screws (3, Fig. 13), you will notice that the
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.