MDM Trouble Report for 2005 Apr 22 Telescope: 2.4m Observer(s): John Ouellette (AMNH) Instrument: DIRECT + Echelle Problem(s) Encountered: The Guider PC was frozen: I did not notice this until I was on my first field. The guider manual suggests rebooting the PC, but also cautions that doing this while there is power to the telescope drives could be a bad thing. I followed the first part of the shutdown procedure to park the telescope and cut the power and then rebooted the PC. All seemed fine after that. There were a few instances when I received IO errors when the CCD was being read out. Unfortunately, I forgot to record the exact error message: one error explicitly stated that 'This was bad' in the comment, the other errors said something about asynchronous I/O.... The I/O errors occured a few times through the night: I don't think that there was anything consistent about what I was doing when the errors occurred. ------------------------------ Submitted on 2005 Apr 23 [6:01:18]