MDM Trouble Report for 2017 Oct 11 Telescope: 2.4m Observer(s): John Thorstensen (Dartmouth) Instrument: Modspec + Echelle Problem(s) Encountered: At the end of a 10-minute exposure the image looked like a bias frame -- noise and structure visible but no obvious cosmic rays. I thought the shutter might have failed, but that didn't explain the absence of CRs. In the end I powered down the Leach boards; the first image that way was similarly blank, but then it started working and I had no trouble with it the rest of the night. A few teething trouble with the TCS, all known bugs at this point. The dome did not respond to the HOME switch (it did las last night, so I moved it onto the contacts with the hand paddle. Also, the NSEW buttons on the paddle often don't respond. ------------------------------ Submitted on 2017 Oct 12 [7:03:52]