Problem(s) Encountered:

On attempting to switch filters, the destination filter icon changed to red and a message to the effect that the MIS filter wheel had failed and the filter wheel should be checked and restarted. We tried to use the MIS GUI to reset the filter wheel. No luck.

Solutions:

In the MIS GUI: First move the guide probe back to (0,0). Do this by entering 0 next to the x position and hitting  Enter.  The probe should move. Do the same for the probe y position.  Or simply choose ‘origin’ from the preset list.  Now shut down the MIS GUI.  2.4m Setup --> Quit.  Now go to the MIS control box in the computer room. (The MIS controller box is the silver box about 4 feet from the ground in the middle rack facing the window). Flip the switch on the  MIS Controller  box to  OFF. Count to 10.  Flip the MIS control box switch to  ON. On the mdm24m workstation 1: Applications --> Telescope Control --> xmis2.  There should be a big red  Initialize  button. Click it once and wait about ten seconds.  Try advancing the filter. All should be well.