TCS runs on a PC clone and is launched from
MS-DOS. At startup, it overwrites MS-DOS and takes control of the telescope
through a custom interface board that communicates with the motor driver
chassis. There is no return to MS-DOS from TCS; a system reset or power cycle
is the only way to exit.
- Before restarting TCS, drive the telescope to the zenith using the TCS
keyboard menu. If you're recovering from a power failure, TCS crash, or
telescope maintenance, you'll need to
set the telescope to zenith with the bubble level.
- Use the hand paddle to put the dome at its home position
(the two red tape marks on the east wall line up).
TCS assumes that the dome is home and the telescope is
at zenith at startup.
- Lift the flap on the lower part of the telescope control panel. Inside
you'll see a computer. Push the reset button (the one the left; there are
three). Cntl-Alt-Del will also reboot the machine, but will not reset the
interface board; sometimes it works, sometimes it doesn't. Use the reset
- The computer boots MS-DOS and leaves you in the C:\TCS directory. Make
sure the EXTERNAL COMPUTER switch is on,
then type TCS.
- On startup, the system spends some time resetting the focus encoder. It
drives the focus motor to a fiducial then back to its original position as
measured on the old focus potentiometer. The potentiometer readout is not as
precise as the encoder so the focus number will be close (< 1.0 focus units)
but not precisely where you left it the night before. For more information,
see the Focus Notes.
Minor edits February 5, 2003 - au
Minor edits November 2, 2001 - au
updated June 17, 2001 - au
updated April 13, 1999