Set Tracking Rate; Set Parking Position; Meridian Treatment; Set Altitude Limit - iOptron CEM40 Instruction Manual

The guide port wiring is shown in Figure 6, which has same pin-out as that from Celestron / Starlight
Xpress / Orion Mount / Orion Autoguider/ QHY5 autoguider.
If you have an autoguider which has the same pin-out as the ST-I from SBIG, such as Meade/
Losmandy/ Takahashi/ Vixen, make sure a proper guiding cable is used. Refer to your guiding camera and
guiding software for detailed operation.
WARNING: DO NOT plug your ST-4 guiding camera cable into the iOptron port or HBX port. It
may damage the mount or guiding camera electronics.

5.4.5. Set Tracking Rate

You can set up the mount tracking rate by selecting "Set Tracking Rate".
Set Up Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate

Set Parking Position

Meridian Treatment

Set Altitude Limit

The mount will determine the tracking rate automatically. The tracking rate can be adjusted manually
using "Customer Rate". The adjustment range is from 0.9900X to 1.0100X of sidereal.
5.4.6. Set Parking Position
You may park the telescope before powering off the mount. This is very useful if the mount is on a
permanent pier or the mount will not be moved in between observation sessions. The mount will keep all the
alignment info and reference points.
There are six parking positions. Two positions that park the scope horizontally (Horizon Position).
Two positions that park the scope vertically (Zenith Position). "Current Position" will park the scope at its
current position. Alternatively, you can enter any altitude and azimuth combination for "Custom Parking
Pos.". When the mount is turned on, it will use the last parking position setting as the default setting.
5.4.7. Meridian Treatment
This function tells the mount what to do when it tracks past the meridian. You can tell the mount if it
needs a meridian flip and when to do it.

"Set Position Limit" will tell the mount when to stop tracking or to do a meridian flip. The limit can
be set at from 0° to 14° (~1 hour) pass meridian for Northern Hemisphere and 0° to 10° for Southern
Hemisphere.

"Set Behavior" will tell the mount if a meridian flip will be performed.
5.4.8. Set Altitude Limit
This function allows the mount to keep tracking an object even if it is below the horizon but can still
be seen, for example from an elevated observation site, such as a hill. The range can be set from -89° to
+89°. The default limit is 00°. Be careful when setting this limit. It may cause mount goto problems.

5.4.9. Enable CW Up Position

This setting will allow the CW moving to an up position. The upward angle limit is same as the
meridian flipping setting, or 10 degree at maximum. When this set is enabled, the mount will goto pass the
meridian if an object is close to the meridian, within the angle limit. There will be no meridian flip when pass
the meridian.
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