34
Looking at or near the
Sun
will cause
irreversible
damage to your eye. Do not point this telescope at or near the Sun.
Do not look through the telescope as it is moving.
thread inward one of the adjustment/lock knobs (1, Fig. 24) while unthreading another of these
knobs. Only make adjustments to two knobs at a time until the secondary mirror appears as in
Fig. 28.
3.
Secondary mirror-holder adjustments: If the secondary mirror (1, Fig. 28) is centred in the
focuser drawtube (2, Fig. 28), but the primary mirror is only partially visible in the reflection (3,
Fig. 28), the three “+” (Phillips head) secondary mirror-tilt screws (2, Fig. 24) should be slightly
unthreaded to the point where the secondary mirror-holder (3, Fig. 24) can rotate about its axis
parallel to the main tube. Grasp the secondary mirror-holder (avoid touching the mirror surface!)
with your hand and rotate it until, looking through the drawtube, you can see the primary mirror
centred as well as possible in the reflection of the secondary mirror. With the rotation of the
secondary mirror-holder at this best-possible position, thread in the three Phillips head screws
(2, Fig. 24) to lock the rotational position. Then, if necessary, make adjustments to these three
Phillips head screws to refine the tilt-angle of the secondary mirror, until the entire primary
mirror can be seen centred within the secondary mirror’s reflection. With the secondary mirror
thus aligned the image through the drawtube appears as in Fig. 29.
4.
Primary mirror adjustments: If the secondary mirror (1, Fig. 29) and the reflection of the
primary mirror (2, Fig. 29) appear centred within the drawtube (3, Fig. 29), but the reflection of
your eye and the reflection of the secondary mirror (4, Fig. 29) appear off-centre, then the
primary mirror tilt requires adjusting, using the Phillips head screws of the primary mirror cell
(3, Fig. 25). These primary mirror-tilt screws are located behind the primary mirror, at the lower
end of the main tube. See Fig. 25. Before adjusting the primary mirror-tilt screws, first unscrew
by several turns (use either a hex wrench or pliers) the three hex-head primary mirror lock
screws (2, Fig. 25) which are also located on the rear surface of the primary mirror cell and
which alternate around the cell’s circumference with the three Phillips head screws. Then by
trial and error turn the primary mirror Phillips head tilt screws (3, Fig. 25) until you develop a
feel for which way to turn each screw to centre the reflection of your eye in the drawtube. (An
assistant is helpful in this operation.) With your eye centred as shown in Fig. 26, turn the three
hex head primary mirror lock screws (2, Fig. 25) to re-lock the tilt-angle of the primary mirror.
The telescope’s optical system is now aligned, or collimated. This collimation should be re-
checked from time to time, with small adjustments (per steps 1, 2, and/or 3, above) effected as
required to keep the optics well-aligned.
Meade Consumer Solutions
If you have a question concerning your StarNavigator telescope, contact the Meade
Instruments Consumer Solutions Department at:
Telephone: 800-626-3233
Consumer Solutions hours are 7:00 a.m. to 5:00 p.m., Pacific Time, Monday through Friday. In
the unlikely event that your StarNavigator telescope requires factory servicing or repairs, write
or call the Meade Consumer Solutions Department first, before returning the telescope to the
factory, giving full particulars as to the nature of the problem, as well as your name, address,
and daytime telephone number. The great majority of servicing issues can be resolved by
telephone, avoiding return of the telescope to the factory.
Summary of Contents for starnavigator ng series
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