Meade LXD 75 Instruction Manual page 61

Step 4.
Step 3.
Step 5.
Step 6.
Step 8.
Fig. 53: Indicator Light Key for
Changing the Polar Mode.
Note: The tracking rate can be increased by up to 65%.
4. To use a rate slower than sidereal, press OUT (6, Fig. 49) until light 4 blinks again
(sidereal rate). Press OUT key and light 4 goes out, signifying a tracking rate
0.5% slower than sidereal. Note that when the Mode function is active, the
tracking motor stops. To restart the tracking motor, press MODE again.
Experiment with this function to get the right speed: Press OUT to set the track-
ing rate. Then press MODE and look through the eyepiece. Continue pressing
OUT and MODE until the object remains centered with little or no drifting in the
eyepiece.
Note: The tracking rate can be decreased by up to 65%.
5. Press and hold MODE until only a single light is on. This exits the Mode function.
If Northern or Southern Hemisphere polar mode was chosen, the motor drive
starts operating at the sidereal rate.
6. Use the four Arrow keys (1, Fig. 49) to slew the telescope to the desired object.
To change the slew speed, press SPEED.
Changing the Polar Mode
To use the Electronic Controller to change to Northern or Southern Hemisphere polar
mode, use the following procedure. This procedure also allows you to select a
"Tracking Disabled" setting. Refer to Fig. 53.
1. Complete the SETTING THE POLAR HOME POSITION
page 17.
2. Complete steps 2 through 8 as described in
ELECTRONIC CONTROLLER
3. Press and hold MODE until lights 1 and 2 are on steady Ignore lights 3 and 4;
they may or may nor appear as depicted in the figures to the left (how these lights
appear depend upon what has previously has been set).
4. Press SPEED once. This changes the system to polar mode for the Earth's
Southern Hemisphere, with the motor drive set to operate at the sidereal rate.
5. Press SPEED a second time. This changes the system to polar mode for the
Earth's Northern hemisphere, with the motor drive set to operate at the sidereal
rate.
6. Press SPEED a third time to disable tracking.
7. Use the SPEED key as described in the above steps to cycle among these three
modes (Southern Hemisphere polar, Northern Hemisphere-polar, or Tracking
Disabled) until the desired mode is shown by the appropriate light configuration.
8. Press and hold MODE until just one light is on. This exits the Mode function. If you
choose Northern or Southern Hemisphere polar mode, the motor drive starts
operating at the sidereal rate.
9. Use the four Arrow keys to slew the telescope to the desired object. To change
the slew speed, press SPEED.
Optional Autostar ™ Computer Controller for LXD75 EC Users
One of the most important advances in telescope control in the past 25 years, the
Meade Autostar Computer Controller turns your LXD75 EC model into an automatic
celestial object locating system. Just plug Autostar into the telescope's HBX port in
place of the standard-equipment Electronic Controller, do a quick telescope align-
ment, and you are ready to observe any object in the Autostar's 30,000-object data-
base.
Best of all, the Meade Autostar is easy to use. Even the most novice observer will
locate dozens of fascinating celestial objects the very first night out. Study Saturn and
its ring system; the primary cloud belts of Jupiter as well as its four major satellites;
the moon-like phases of Mercury and Venus; prominent features on Mars. The Moon
stands out in stark, almost three-dimensional detail—craters, mountain ranges, and
fault lines. In our galaxy, the telescope displays hundreds of nebulae, star clusters,
double and multiple stars, and variable stars—plus dozens of external galaxies in all
their variation of form and structure.
Any of Autostar's database objects can be called up and entered on the hand con-
troller display in seconds. The observer then simply presses the GO TO pushbutton
and watches as the telescope automatically slews to the object and places it in the
field of view. Autostar moves the telescope to automatically track (follow) the object
across the sky. Autostar brings into easy access objects that were previously unreach-
able for all but the most dedicated of amateur astronomers.
TO MOVE THE TELESCOPE USING THE
, page 59, to initialize the Electronic Controller.
procedure, described on
6 1