1.  Stow the Telescope

If observing, follow the usual closing procedure.  Stow the telescope at zenith, close the instrument hatch and mirror covers.  Close the dome.

If rains are extremely heavy (or forecast to be so), it is worthwhile to stow the telescope at an angle to allow for any drops that fall to the mirror covers to run off.  A good position would be around HA=-01:30:00 dec=00:00:00.

2.  Shut down Computers

     •Bring down all software if possible before powering down the computers.

Workstations and Servers

There are a number of computers in the 2.4m computer room that must be properly shut down:  For all configurations, the Win10 TCS computer and the Linux computer hiltner.  If using either the Andor or the CCDS slit-viewing camera, these Windows Vista machines will need to be powered down as well.  Shutdown procedures follow:

     •If using OSMOS, CCDS, TIFKAM, B4K or R4K, bring down the IC computer by quitting prospero then quitting out of the data-taking program ("quit" command at the Raritan keyboard), then turning off the PC power when you get the DOS prompt.

     •If using ModSpec, MkIII, Templeton, Nellie, or Echelle, quit the Owl software then power off mdmarc1 by using the "shutdown" prompt on the Raritan.

     •Login to hiltner as obs24m via ssh.  At the Unix prompt, type "shutdown" and answer "y" to the question.

     •Windows Vista machine for slit-viewing (if used) is powered off from the startup menu at the bottom-left of the screen.  Click on the small Windows logo and go to the right side of the menu to bring up the sub-menu for shutting down.  

TCS PC & Control Box (seen here)

     •Close all software (MaximDL, Guide_Focus, DFM TCS (File>Exit)).  From the startup pull-up menu, choose to power down.

     •Flip MTR DRIVER CHASSIS switch to OFF on the MDC, located in the computer room above the TCS PC.  Note that powering off the MDC will engage the brakes.

3.  Shut down the MIS Interface (seen here)


     •Power up the MIS interface electronics.

     •If using OSMOS, CCDS, TIFKAM, B4K or R4K, power up the IC computer.

     •If using ModSpec, MkIII, Templeton, Nellie, or Echelle, power up mdmarc1.

     •Power on hiltner.

     •Flip MTR DRIVER CHASSIS switch to ON on the MDC and power up the TCS PC.

     •Power up the Windows Vista PC used for slit-viewing if necessary.

     •Go through the normal software startup procedures for telescope and relevant instrumentation.

          •If using a prospero-based system, refer here to bring up data-taking software.

          •If using Owl-based system, simply open Owl and set it up, as described here.

     •After initializing xmis2, click on the FINDER "out" button to insure that the finder's prism is truly out.  This will also stop any finder motion activity (noise).

     •Through the TCS control GUI, be sure to disengage the brakes before attempting to move the telescope!  


Hiltner 2.4m Lightning Shutdown Procedure

Prepared with contributions by Galayda, Barr, Halpern & Pogge


Note:  If there is no observer at the 1.3m telescope, the 2.4m observer is responsible for a lightning shutdown on both telescopes.

(1.3m Lightning Shutdown Procedure)