... XmTel is a telescope control interface designed to to communicate with Elwood Downey's XEphem. It will also operate as a free-standing program for control of telescopes that use the NexStar, LX200 or RCOS command sets. XmTel is accompanied by routines which support the necessary communication and commands for running Meade Instruments LX200, Celestron NexStar telescopes. A version for RC Optical Systems Professional Series mounting is available from the manufacturer. ...

Tcl /Tk programs can act as XPA clients and/or servers using the Tcl interface to XPA that is contained in the libtclxpa.so shared object. set xpa [xpanew class name help sproc sdata smode rproc rdata rmode] xpafree xpa set xpa [xpanew class name help iproc idata imode] set xpa [xpacmdnew class name ] xpacmdadd xpa name help sproc sdata smode rproc rdata rmode xpacmddel xpa cmd ... When this routine is called, a copy of buf is saved for transmission to the client. ...