User`s guide

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Setup Time-Site – Allows the user to customize the CPC display by
changing time and location parameters (such as time zone and
daylight savings).
Anti-backlash – All mechanical gears have a certain amount of backlash
or play between the gears. This play is evident by how long it takes for a
star to move in the eyepiece when the hand control arrow buttons are
pressed (especially when changing directions). The CPC’s anti-backlash
feature allows the user to compensate for backlash by inputting a value
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between gears. The amount of compensation needed depends on the
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for the star to appear to move in the eyepiece. There are two values for
each axis, positive and negative. Positive is the amount of compensation
applied when you press the button, in order to get the gears moving
quickly without a long pause. Negative is the amount of compensation
applied when you release the button, winding the motors back in the
other direction to resume tracking. You will need to experiment with
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for most visual observing, whereas a higher value may be necessary
for photographic guiding. Positive backlash compensation is applied
when the mount changes its direction of movement from backwards to
forwards. Similarly, negative backlash compensation is applied when the
mount changes its direction of movement from forwards to backwards.
When tracking is enabled, the mount will be moving in one or both axes
in either the positive or negative direction, so backlash compensation will
always be applied when a direction button is released and the direction
moved is opposite to the direction of travel.
To set the anti-backlash value, scroll down to the anti-backlash option
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responsiveness of each of the four arrow buttons. Note which directions
you see a pause in the star movement after the button has been pressed.
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when pressing or releasing the button. Now, enter the same values
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releasing the button, but setting the values lower results in a pause when
pressing the button, go with the higher value for positive, but use a lower
value for negative. CPC will remember these values and use them each
time it is turned on until they are changed.
Slew Limits – Sets the limits in altitude that the telescope can slew
without displaying a warning message. By default the slew limits are set
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the horizon. However, the slew limits can be customized depending on
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attached to your telescope preventing it from pointing straight-up,
you can set the maximum altitude limit to read 80º, thus preventing
͕͘͠
altitude without warning.
Slew limits are applied relative to the base of the mount not the
actual horizon. So when setting the slew limits when using the
telescope on an equatorial wedge, remember that a minimum
slew limit of 0° would prevent the telescope from slewing down
past the celestial equator not the horizon. To set the slew limit so
that the telescope will slew to the horizon while on a wedge, you
must set the minimum slew limit to equal your latitude minus 90°.
Filter Limits – When an alignment is complete, the CPC automatically
Ǥǡ
scrolling through the database lists (or selecting the Tour function),

be above the horizon when you are observing. You can customize the
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mountainous location where the horizon is partially obscured, you can
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
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numeric keypad, the hand control will display a warning message before
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If you want to explore the entire object database, set the
maximum altitude limit to 90º and the minimum limit to –90º.
This will display every object in the database lists regardless of
whether it is visible in the sky from your location.
Direction Buttons – The direction a star moves in the eyepiece varies
depending on the accessories being used. This can create confusion when