The programs in this directory allow control of the focuser on the "Celestron"
C20's at Moore and Mt. Kent Observatory.  These telescopes are prototypes of the
Planewave CDK20, and their focusers are very similar to the production "Hedrick"
focuser provided on the CDK's from Planewave.  

If you are using a Planewave telescope, the version for the CDK125 is
recommended and should work for any production Planewave instrument with an EFA.

In the case of the C20, the focuser is controlled through the interface to the
mount, which is a heavier version prototype of the CGE Pro.  However, as long as
the serial port is not being used by the telescope controller, in Linux the two
programs can "share" the port because they use the same configuration and
command structure.

It is still advisable not to issue a focuser command while interacting with
mount positioning in xmtel for the C20. We have not implemented a lock file and
commands could get corrupted.