We are continuing the acceptance and development tests on the telescope begun in July, 2000. The work planned for our next trip to Arizona, scheduled for 20-26 September, 2001, had to do primarily with further work on the telescope control system, with a secondary emphasis on mechanical work to the enclosure.

The work planned fell into three categories as follows:

1. MECHANICAL ADJUSTMENTS and augmentation of the telescope structure.
1. Adjust the limit switches in the secondary mirror cell and make sure the motions have sufficient range to focus and tilt the secondary mirror over the operating ranges expected. (We deferred this task indefinitely.)
2. Set up the trial fiber to lead light from the instrument head into a video camera for tracking tests with a more sensitive camera. (We set this fiber up with a photometer of Lou Boyd's and used it to verify that we were getting light through the fiber while bright tracking stars.)
3. Put brush seals into main telescope enclosure to seal out air, dust, and blowing water. (The brush seals arrived the second day of our work sedssion, and we put most of them in place this trip. There is still some fitting work to do on them for the next trip, however, and we need to caulk the bases of some of these seals and put threshold ramps in the two doors to protect the enclosure better from blowing rain.)
2. ELECTRICAL WIRING.
1. Try to reprogram the JPEG server to record more than one image and reset the program that copies images out of the device. (We deferred this task indefinitely.)
3. Work on the DRIVES and CONTROL SYSTEM.
1. Continue testing the code for automatically starting the telescope up and running it under complete computer control. (We got this working routinely in five nights of observing. On the last two nights, we ran the telescope automatically under complete control of the computers after operating it for about five hours each on the first three nights.)
2. Finish putting code for making log files into the telescope-control programs and test to see whether it degrades the performance of the control system. (We collected a lot of data in log files in the existing formats to use in deciding how to handle these logs before our next work session.)
3. Run more tracking tests with the fiber feed in the instrument head to determine the best exposure times and techniques to use for the guiding camera. (We ran hours of tracking tests, some with the light from the fiber going into a photometer (see 1.2 above). The tracking seems to be working quite well for the setup we have now.)
4. Run further acquisition tests with secondary mirror in place. (We have acquired many stars over this work session without much trouble. The pointing seems to be stable, at about 0.5-arcmin, and the tracking seems even better. The telescope has trouble acquiring stars dimmed by clouds, as might be expected, and we may need to adjust somewhat our scheme for predicting an appropriate exposure time for the acquisition/guide camera.)