Meade Zero Image-Shift Operating Instructions

For use with Schmidt-Cassegrain and 7" Maksutov-Cassegrain Telescopes
Introduction
The Meade #1209 Zero Image-Shift Microfocuser allows
precise, vibration-free image focus during visual, CCD, and
astrophotographic applications. It also allows you to achieve
focus without causing a viewed object to move out of position
in the eyepiece.
The microfocuser comes equipped with a handbox which
requires 8 AAA batteries (user-supplied). The microfocuser
maintains precise image centering on even the smallest CCD
chips. The microfocuser operates at four speeds: Fine to fast.
Important Note: The microfocuser is shipped with
the SC accessory adapter (L, Fig. 1) threaded into
the microfocuser adapter (B, Fig. 1). Unthread the
adapters from each other before attaching the
microfocuser.
To
Attach the Microfocuser
to the Telescope
1. Remove the dust cap from the rear cell port of your
telescope. Thread the microfocuser adapter (B, Fig. 1)
onto the rear cell port thread (A, Fig. 1). Slide the
microfocuser (C, Fig. 1) over the microfocuser adapter
and tighten the three set screws (K, Fig. 1) using the
provided hex key.
2a. 1.25" Diagonal Prism Users: Slide the 1.25" adapter (D,
Fig. 1) into the microfocuser. Line up the thumbscrew
(H, Fig. 1) into the groove in the microfocuser (Fig. 2a
and 2b). Tighten the microfocuser thumbscrews (I, Fig.
1) to a firm feel only. Slide the 1.25" diagonal prism into
Fig. 1: Microfocuser and eyepiece assembly. (A) Rear cell of telescope (shown separate
from the telescope assembly for the sake of clarity); (B) Microfocuser adapter;
(C) Microfocuser; (D) 1.25" accessory adapter. SC accessory adapter (L) may be used in
this position instead if Schmidt-Cassegrain accessories are being used. Do not use either
adapter if using a 2" diagonal diagonal mirror; (E) Eyepiece holder thumbscrew;
(F) Eyepiece; (G) 1.25 "Diagonal Prism. 2" diagonal mirror may also be used in this
position (12" models); (H) Adapter thumbscrew; (I) Microfocuser thumbscrews;
(J) Microfocuser bearings; (K) Set screws.
Operating Instructions
Meade ® #1209 Zero Image-Shift Microfocuser
OR
the adapter (D, Fig. 1). Tighten the accessory adapter
thumbscrew to a firm feel only.
2b. SC Optional Accessory Users: If using any of the Meade
Schmidt-Cassegrain optional accessories, slide the
supplied SC accessory adapter (L, Fig. 1) into the
microfocuser. Line up the the groove on the side of the
adapter with either of the microfocuser thumbscrews (Fig.
3a and 3b) and tighten that thumbscrew to a firm feel only.
Slide the optional accessory into the accessory adapter.
Tighten the other microfocuser thumbscrew to a firm feel
only.
2c. 2.0" Diagonal Mirror Users: Slide the 2.0" diagonal
mirror directly into the microfocuser. The adapters are not
required. Tighten the thumbscrews (I, Fig. 1) to a firm feel
only.
Plug in the handbox: Plug the coiled cord attached to
3.
the microfocuser into the port (3, Fig. 6) located at the top
of the handbox.
Note: The coiled cord may be plugged into the
Focus port of the LX90 APM or the LX200 control
panel instead of the handbox. The microfocuser is
then controlled with the Arrow keys of the Autostar
handbox or computer controller handbox.
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
Maintenance:
Fig. 2a: Microfocuser groove.
Fig. 2b: Microfocuser 1.25" adapter
thumbscrew in groove.
Groove
Line up
Fig. 3a: SC adapter groove.
Fig. 3b: Line up SC adapter groove
with microfocuser thumbscrew.