We are continuing the acceptance and development tests on the telescope begun in July, 2000. The work for our next trip to Arizona, 16-25 May, 2002, (by Joel Eaton and Mike Williamson) had to do with making some modifications to the spectrograph enclosure, verification of modifications of the scheduling algorithm in the control system, assessment of rubbing in the skirt on the fork, and further assessment of any mechanical problems that may have arisen from the last few months of automatic operation. Eaton also managed to make it to the top of Mt. Wrightson.

The work planned fell into three categories as follows:

1. MECHANICAL ADJUSTMENTS and augmentation of the telescope structure.
1. Put the leg extensions into the wells in the spectrograph enclosure and line them up. (We finished this task on 18 May.)
2. Find out the azimuths at which the base skirt rubs and correlate them with changes in the demand for azimuth, if possible. (We looked at this one night but didn't find anything that needed fixing.)
2. ELECTRICAL WIRING.
1. Replace the controller for the secondary oil-return system and test it. (We took a replacement controller with us, although Boyd had done this task before we arrived. The fix seems to have reduced the oil consumption considerably.)
3. Work on the DRIVES and CONTROL SYSTEM.
1. Add logic for scheduling observations of specific stars at specific times to the executive computer and test it. (Williamson worked on this task for the month before the trip and continued perfecting the software during our trip. It seemed to be performing reliably on the last couple of nights of our run.)
2. Discuss further the operations and control system with Lou Boyd and decide what changes are necessary for him to keep track of the telescope's operation. (We determined that Williamson will write up a tutorial explaining the control system before our next visit to the observatory and discussed routine checks to make on the equipment in the meanwhile.)
3. Fix logic in the roof-control program that lets the front flap move if the telescope is not at its home position and test it. (We revised the program before the trip and then recompiled it and tested it on 19 May.)
4. Switch the two computers in the control room to give better performance to the gateway computer. (We did most of this on 18 May and finished all the obvious tasks by the end of our work session.)
5. Make more extensive backups of the various control programs and configuration files on the control computers and update the documentation. (Eaton has devised a system of files to be written on a backup CD with a directory for each computer and a Makefile for reloading the critical files for each computer. This scheme was very helpful for switching the computers (see no. 4 above), but the backup CD will have to be remade periodically as the system evolves. Also, the control programs for the telescope and instruments will have to be kept separately, since they are evolving much more rapidly than the other parts of the computer system. We revised all the files for making the next version of this CD while at the observatory and rewrote the backup CD by the end of May.)