Removing SC-10 from telescope

Follow normal end-of-night shut down procedure in End of Night.

• Cass. Cage Takedown
• Data Room Takedown

Cass. Cage Takedown

1. Turn off all SC-10 power supplies, including the GSM Sensor power.

2. Switch off the power to the blue IR (Matthews) rack.

3. Retract the flip mirror before disconnecting cables.

4. Set the Cass ring angle to 90 deg using the ring control computer.

5. Close the pinch valve on the LN2 pump hose. Close the main valve to the pump, and turn off the pump. Remove the white hose from the dewar hose and from the pump manifold. Open the manifold briefly to vent the pump.

6. Remove the offset guider cables from the cable tray. These are Palomar equipment and should be stored in the astronomer's workshop by one of the day crew members.

7. Remove the PClock, Coadder, and GSM Power cables, and the Filter and Slit motor cables from the dewar. Don't disconnect them from the power supplies. Coil up the cables and put them beside the monitor in the SC-10 electronics rack.

8. Remove the two black cables from the Metrabyte breakout box and the bottom of the CoAdder, coil them up and put them on the other side of the monitor.

9. Remove the following cables.
   • Utility box cable: Disconnect from the Utility box, the Cass-8 patch panel, and the ethernet connector on top of the rack.

   • The orange extension cord and its cube tap and black power cables. Keep them together to simplify the next setup.

   • Cable from GSM electronics to GSM connector on dewar. Cap the connector on the dewar.

   • Ribbon cable from GSM electronics to Metrabyte breakout box.

   • Gain/Bandwidth cable from Metrabyte breakout box to PClock Box

   • All BNC cables from PClock, Utility Box, and Flip mirror

10. Disconnect all remaining cables from bottom of PClock box and Metrabyte breakout box. Leave them screwed into top of CoAdder.

11. Remove the GSM electronics box and Coadder from the dewar using the quick-disconnects. Store the CoAdder on the 2nd shelf of the Cornell lab cabinet, and the GSM electronics securely on a shelf where it will fit.

12. Disconnect the helium hose from the blowoff meter and remove the meter from the mounting plate. Leave the hoses and fittings on the dewar helium necks. Store the meter on the top shelf of the Cornell lab cabinet.

13. There should now be no cabling or hoses connecting SC-10 to the telescope.

14. Remove the large allen screw from the lower dewar mounting pin on the west side of the dewar. Make sure all four bolts are available (other three are stored in grey toolbox), as well as the 2 ball driver sizes for these and the micarda block bolts.

15. Remove the bottom of the Cass cage. Place the SC-10 cart near the ram (but not on it).

16. Adjust the separation of the fork tines on the orange lift truck so they line up with the paint marks on the rails. The tines will now clear the centerfield camera, and will be centered on the SC-10 dewar.

17. Put the lift truck on the ram and raise the ram to the bottom of the Cass cage.

18. Raise the lift fork up to touch the bottom of the dewar, so the dewar lines up with the marks on the tines. The marks are set to give enough clearance between the PClock box and the lift truck chain so that they will not hit as the dewar is lowered.

19. Unscrew the tops of the 4 micarda blocks.

20. Slowly raise dewar up, roll the lift back until the dewar is clear of the mounts, then slowly lower the dewar to the bottom of the lift travel. Two people watching clearances and steadying the dewar while a third operates the lift is ideal. Clearances are very tight and the lift release valve is very touchy - be careful!

21. Lower the ram to the floor. Be very careful of clearances on both front and back of dewar and lift.

22. Roll the dewar cart over to the dewar. Raise dewar up enough until cart can roll into place over mounting pins. Raise dewar up until the mounting pins settle into the blocks and the cart is raised slightly off the floor. Insert all four allen screws into the pins and make sure they are reasonably tight. Lower the cart to the floor and roll the lift away.

23. Place a cork over the window and a plastic bag over the flip mirror (both stored in grey toolbox).

24. Remove the SC-10 mounting plate from the coffin using the ram and lift truck. Be sure to clear the center guide camera tube while lowering the plate. Put the bolts in the cloth bag in the top drawer of the red SC-10 toolbox. Put the black plate on the north face of the coffin.

25. Replace the tops of the 4 micarda blocks.

26. Remove the SC-10 electronics rack.

27. Round up all the Cornell tools and put them in one of the Cornell toolboxes.

28. Move all equipment to the Cornell lab using the freight elevator. Don't forget the liquid helium transfer tube and the inner tube on the LHe storage dewar.

29. The dewar should not be dumped -- just let it gradually warm up.

Data Room Takedown

1. After backing up all data to tape, exit CDE and shut down the system as described in New GRB Workstation Setup.

2. Make sure power is off to the CPU, monitor, disk, tape drive, and the AC power strip on the GRB cart.

3. Remove the cable between the CPU ethernet connector, the Chopper box, and the DR-9 patch panel. Also remove all the power cables and the ethernet transceiver BNC.

4. Remove the two cables from serial ports A (DB25 connector for TCS) and B (DB25 connector for SAM). Plug the port B cable into the back of the SAM terminal (currently a VT510) which normally runs MIRELLA.

5. Place the keyboard, mouse, and mouse pad on the GRB cart.

6. Disconnect the chopper box from everthing and put it on the SC10 tool cart.

7. Move everything downstairs to the AO lab in the Pharo corner.