Setting Up the Offset Guider

In the Cass. cage, the Logic, Motor+5, and Motor+55 switches must all be on.

From the SAM terminal or the Mirella XTerm on GRB:

1. Logon as IRCASS3 (supply password as needed)
2. Type

   $ RMIRELLA

   Answer NO to all questions on a first start. Answer YES or NO on a restart as appropriate. An M> prompt should appear.

3. Type

   M> RMACF OGZE

4. Type

   M> M{ I

   Note the space between the { and the I. The M> should promptly return. If it doesn't, the stepper motor controller power switches in the Cass cage may be turned off. You may also need to press the controller reset switch after turning on the power.

   If any of these four commands fails (produces error messages) get help! There is likely to be a system error in the hardware or software.

5. Type

   M> // OGZE

   The guider is now initialized with all the various co-ordinated offsets put to zero. However, the guider head is not moved physically and is likely to be off in left field somewhere. If the motors at Cass. focus are not turned on, this program will stop after a few macro lines and timeout after another 3--4 minutes.

6. Type

   M> og r 0 0

   to move the guider head to its origin. If you now turn up the Quantex on the center field camera you will see a dark dog-leg across the center of the field. This is the guider head. The actual optical input to the guider is more or less at the joint in the dog-leg.

Setting Up the MINC

If you are using the Tip-Tilt Autoguider, you will need to setup the MINC. The MINC is the PDP-11 computer that sits to the left of the electronics rack / scope in the data room. The monitor is usually sitting to the right of the electronics rack, right next to the SAM monitor that runs mirella.

1. Close both RX02 doors on the PDP-11 computer.

2. Turn on the power to the PDP-11 computer.

3. Once the computer has booted up, you should see the following prompts:
   
   28
   START?
   
   Type:
   
   Y <RETURN>

4. Type:
   
   $ RMACF CU

5. Continue with:
   
   $ /CU     (this sets the cursor to the proper place).

6. Open both RX02 doors. The MINC should be ready for the checkout procedure, and if all is well, it should be ready for Tip-Tilt Autoguiding.

At this time, there is a setup procedure in the works that will describe how to continue on from this point. Check with the mountain crew to get this procedure. You need to make sure the MINC, Mirella, DS-20 video, and the telescope are all talking properly to each other.