Preparations for Science:
 

• Close building four hours before sunset.

• Start exhaust fan ( weather permitting ) at least two hours before sunset. Crack east door, be sure hatches are closed.

Telescope Aliveness test:
 

• Start TPM logging for the night.

• Verify MCP is talking and Menu will run.

• If not already done, set Az and Alt brakes.

• Check that nothing is around/on the telescope which would interfere with altitude or rotator motion.

• Make sure nothing is in the path of the rotating racks, or on/around Az drive disk.

• Check air pressure gauges for the main compressed air supply and primary support system.

• Be sure a stop button is in, preferably at the telescope.

• *Check telescope balance ( top/bot is all you can currently do inside the building ) by releasing Alt brake and moving Alt by hand within windscreen at some moderately low elevation ( ~15 deg ) to see if it will drift up or down on its own. Re-apply Alt brake when done.

• Start the interlocks display and check that all looks normal.

• Check the interlocks bypass panel to be sure you know state of any bypassed interlocks.

• Turn on Glenteks. Check that they come up ok and are in remote mode.

• Check that servo connections for windscreen are in place.

• Turn on windscreen with knife-switch ( breaker 33 also needs to be on).

• Check altitude motion via MCP: Release all stop buttons. Reset amplifier for Alt. ( Menu l  * ) Release Alt brake ( Menu l  h  c ). Make an Alt move. Combine motion test with drive surface checking/cleaning to allow access to entire surface.**

• Set the Alt fiducial ( start at 14.5 and move up at 5000 cts/sec until crossed, put alt in hold then set fiducial ) Return Alt to ~18.5 deg when done. Set Alt brake.

• Check Rotator motion via MCP: Release all stop buttons. Reset amplifier for Rot. (  Menu r  * ). Make a Rot move. Combine motion test with drive surface checking/cleaning to allow access to entire surface.**

• Set the rot fiducial ( start at ~0 and move positive at 5000 cts/sec until crossed, put rot in hold and set fiducial ).

• *Check azimuth motion via MCP: Reset amplifier for Az . ( Menu z  * ) Release Az brake ( Menu z  h  c ). Make an Az move. Combine motion test with drive surface checking/cleaning to allow access to entire surface

• *Set the Az fiducial ( start at 120 and move up at 5000 cts/sec until crossed, put alt in hold then set fiducial ) Return Az to ~121 deg when done. Set Az brake.

• *If first instrument of the night is not already on, mount it ( see appropriate inst change proc. ).

• Make sure TELRUN is running.

• Make sure the proper instrument is set in TELRUN.

• *Make a test slew using the TCC. Return to stow when finished.

• Hit the north windscreen stop button.

• Verify primary controller talks to the TCC.

• Verify primary is in proper position ( galils, and migs ). Check MIG values below. They should match historical values to .002.

        MIGS                              Historical Values
        ___Axial A                            1.9315
        ___Axial B                             0.5570
        ___Axial C                             0.5570
        ___Transverse D                     0.4075
        ___Lateral E                           1.8980
        ___Lateral F                           0.3990

• Verify secondary controller talks to the TCC.

• Verify secondary is in proper position ( galils, and migs ). MIGS A,B and C should agree to within 0.1. D should be <|0.1|.

        ___Axial A
        ___Axial B
        ___Axial C
        ___Transverse D

• Check that you can talk to and control the mechanicals of the instruments to be used that night.?

• Take a frame with each instrument to be used that night.?

• Check chiller configuration.

• Fill spectrograph dewars if operational.

• Check/Replace imager 180 L dewar if operational.

• If the imager is operational, check nitrogen gas bottle pressure, as well as bellows gauges.

Person performing checkout: ___________________

Date: _______________________