Using the Drive • 41
The Hand Controller
When using your Celestron CM-1100 in the southern hemisphere, there is a
need to reverse the motors. Changing from northern hemisphere to southern
hemisphere requires changing the polarity of the drive motor by changing the
settings of the dip switches on the electronics board. To do this:
1.
Remove the cover of the electronic console by removing the four screws
(one in each corner).
2.
Remove the two screws (one directly above the DEC motor jack and the
other next to the On/Off indicator light) that attach the cover to the elec-
tronics board where the dip switches are located.
3.
Locate the dip switches on the electronics board as shown on figure 5-5.
4.
For operation in the southern hemisphere, set switch 4 to the OFF or down
position (see Figure 5-6).
The direction of the drive motor is now reversed and will work in the southern
hemisphere. If going from the southern hemisphere to the northern hemi-
sphere, simply change the switch back to the ON or up position.
The hand controller allows you to move the telescope in R.A. and DEC using
the corresponding motors. This includes fine corrections for guided astropho-
tography and minor adjustments for centering objects in the field of view.
The buttons on the hand controller are intentionally labeled in a rather vague
manner. This is due to the fact that the direction of motion of the mount varies
depending on how the telescope is oriented. Furthermore, these buttons are
user definable to eliminate confusion when guiding. (For more information, see
the section on “R.A./DEC Reverse.”)
Once again, to move the telescope at the 20x speed WITHOUT changing the
guide setting, press the button that corresponds to the direction you want to
move the telescope. While holding the button down, press the opposite
directional button. For example, if you want to move the telescope west, hold
the west button down and then press the east button. Conversely, if you want
to move the telescope east, hold the east button down then press the west
button. The fast-set function also works in declination.
Northern/Southern
Hemisphere Operation
Figure 5-5
Figure 5-6
