Appendix B: Shutdown Checklist

Telescope

• Stow the telescope at the zenith (Dec=31:57) :

• If you wish to put the telescope precisely to zenith then:
  • turn the TRACK off but leave the DRIVES on

  • Make fine adjustments with hand paddle in the control room, until the TILT METERS read zero.

Telescope Control System

• Turn the SIDEREAL DRIVE rotary switch to OFF.

• Press STOP; power goes off at the TELESCOPE CONTROLLER.

• Turn off TELESCOPE MONITOR or lower brightness.

Computers and Instrumentation

• Fill instrument dewar with liquid nitrogen if required.

• Leave the Linux workstations and X-windows running.

• When did you last backup your data to tape on mcgraw or DVD on hill?

• Did you remember to turn off the dome flat field lamps if used?

MIS and Guider

• Close the MIS hatch.

• Are all the spectral lamps / flat field lamps turned off?

• Turn off the following units located in the observing room:
  • GUIDE CAMERA POWER SUPPLY.

  • GUIDE MONITOR.

Dome

• Check that the mirror covers are fully closed.

• Check that the dome is at the home position. If the contactor box is mis-aligned:
  • Rotate the dome manually from the dome control panel.

• Close the drop-out shutter and the main shutter.
  • If they won't close or are intermittent the contactor box is not properly aligned.

• Close all the dome doors

• Re-check that you turned off the LN₂ storage dewar after filling the instrument!

• Turn on Air conditioner.

Conserve Energy!

• Turn off all the lights. This a) saves money and b) keeps down the potential load on the generator, which may fail to start automatically when too heavily loaded.