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Maintenance
The microfocuser is carefully adjusted at the factory. If it becomes necessary to adjust the
microfocuser ball bearings (see Fig. 5), it must be performed by factory trained technicians. If the
microfocuser is improperly adjusted, performance will degrade and damage will result. Damage due
to improper adjustments not authorized by the factory will not be covered under warranty.
Note: If you wish to mount a camera directly to the microfocuser, you need to
attach an optional T-Adapter to the microfocuser. For more information about
Meade optional accessories, see the Meade Product Catalogue or contact your
To Focus Using the Microfocuser
1.
Perform this part of the procedure during the daytime, without the eyepiece assembly
(eyepiece, diagonal, etc.) attached to the microfocuser. On the AutoStar II press the Focus
button and then the Up and Down Arrow keys. Observe the microfocuser drawtube as it
travels in and out. When the drawtube reaches the furthest extension of its travel, listen for
a change in the pitch of the motor. Notice that the drawtube's maximum extension is about a
half-inch out from the microfocuser. Set the drawtube so that it extends about a quarter-inch
(about halfway).
2.
When you begin your viewing session, attach the eyepiece assembly.
3.
Make sure that the microfocuser is plugged into the computer control panel focus port.
4.
Point the telescope at a bright star.
5.
Rotate the mirror lock knob towards the "unlock" position until it feels loose. Use the coarse
focus control to achieve a rough focus of the star (see Fig. 4).
6.
Rotate the mirror lock knob towards the "lock" position and adjust the tension to a firm feel;
this action serves to lock in the coarse focus.
Important Note: Do not use or bump the coarse focus knob once you have set the
coarse focus. If you do so, repeat steps 5 and 6 above to reset the coarse focus.
7.
Press the Focus key (Number key "4"). "Focus Control: Speed: Fast" displays. Press the Up or
Down Scroll keys to cycle through the four speed options. Press ENTER to select the desired
speed. Or press one of the following Number keys after pressing the Focus key to change the
speed:
Key #
1 or 2
3, 4 or 5
8.
Use the Arrow keys to bring the star into fine focus.
9.
You may need to repeat this procedure when you change eyepieces.
local Meade dealer.
Speed
Fine
Slow
Key #
Speed
6 or 7
Medium
8 or 9
Fastest
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