The night actually started out clear, but with the moon up, we started with specoscopy: Cart 1 plate 627. Right after opening the building, we went to move the telescope up and found the MCP unresponsive - we could not even connect to it via telnet. We rebooted it and all was well. Today, Dan is driving on his machine while Scot is operating Landru in multi-screen mode, but with a DIFFERENT Xserver than previously. Earlier in the evening, he got the old Xserver to die within 10 minutes of logging in. The new Xserver runs a different instance of the window manager in each screen and does not allow for dragging of windows across screens. But it does mean any window that pops up from another window will be on the same screen as the parent. We'll run with this and see if the X crashes go away. (Most of the time, btw, the "crashes" means the Xsession dies and we are returned to the Xdm login prompt - although more severe crashes have also been experienced. Cart 1 - plate 627 required a 15" E offset to find guide stars. We ware running with the 72 point pointing model. Dan recommends running with this model and applying a 15" E offset if you can't find stars. Last night, the same plate with the same pointing model found the stars right away. What'sup with that? We did reboot the MCP today, though. Combined with last night's data, plate 627 was finished in two exposures and we had about an hour to go before the moon went down. Since it was still clear (and seeing still excellent), we decided to use this time to switch instruments so the moon wold be down by the time the imager were ready. If we beat the clouds, we could always do an astrometric calibration scan. We did beat the clouds and our top priority strips did not have UCAC coverage, so we decided to set up on a FASTT field (field N) for initial setup and our needed astrometric calibration scan. Dan checked collimation for out of focus donuts and they looked good. In focus, we got seeing as good as 0.78! Focus value was about -485. Clouds came in shortly thereafter and the seeing got worse. Sigh. At least the imager appeared to be working! Skippy run during this scan from the logTool apparently failed in astrom, but skippy run "by hand" worked fine (the nuErr was ~5"). You can look at the astrom murmur output to debug things.... At 22:41, the TCC axes "halted for a problem" (according to the watcher). Other errors from the watcher were: Modu="prt Read" (Aug 22 22:40:52 MDT) Modu="axe o Move" (Aug 22 22:40:52 MDT) Modu="axe i SchMove" (Aug 22 22:40:52 MDT) Modu="exe Track" (Aug 22 22:40:52 MDT) Modu="prt ReadMatch" (Aug 22 22:40:52 MDT) At this point, our FASTT field was 2 hours over and the next one was also two hours over (the other way) so we went to a UCAC field. (The clouds were also thickening - they came in just as we mounted the imager - of course....)