MDM Trouble Report for 2006 Jun 15 Telescope: 2.4m Observer(s): Thorstensen (Dartmouth) Instrument: modspec + echelle CCD Problem(s) Encountered: I got a few random asynchronous read errors, which cost me a few integrations. I'm reading a smaller number of pixels for the spectroscopy compared with the direct imaging, which may make this setup less vulnerable to this problem. But it's still there. One follow-up: Yesterday, Bob attached a wire to the Leach electronics box to ameliorate a grounding problem that apparently was causing a herringbone pattern in the biases. He thinks there are some loose wires in the box (vestigial, from an old setup) that may be causing some pickup. The biases look much cleaner now. ------------------------------ Submitted on 2006 Jun 16 [5:09:53]