Zero Position; Goto Zero Position; Set Zero Position; Search Zero Pos - iOptron CEM40 Instruction Manual

5.10. Zero Position

5.10.1. Goto Zero Position

This moves your telescope to its Zero Position.

5.10.2. Set Zero Position

This set the Zero Position for the firmware.
The Zero Position reference will be an undefined value after firmware upgrade, or it may lost during
power outage or HC battery replacement. You can use this function to set the zero position reference.
Press the ENTER after moving the mount to Zero Position either manually or with the hand controller.

5.10.3. Search Zero Pos.

In the event of power failure, the mount will lose all its alignment information. This can be very
troublesome if the mount is being operated from a remote observation site and is controlled via the internet.
To counter this, the CEM40 has been equipped with a function that can find the Zero Position for an initial
mount set up.
Select "Search Zero Pos." and the mount will start to slew slowly and find the R.A. and DEC
position to set the mount to the Zero Position. When the mount has found the Zero Position, the HC will ask
if you want to calibrate the Zero Position. Press ENTER to confirm. Use the arrow button to adjust the
mount in RA and DEC to correct the obvious discrepancy in the Zero Position. Alternatively, press BACK to
cancel.
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