----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Wed Jun 24 16:52:46 GMT 1998 Year: 98 Doy: 175 Observer: koon WEATHER COMMENT: Wed Jun 24 16:52:48 GMT 1998 Thin to medium cirrostratus overcast, wind=10 mph from the SSE, temp=50 F. Wed Jun 24 16:53:44 GMT 1998 CHIP Startup--Initializing new tape Wed Jun 24 17:02:33 GMT 1998 CHIP CHIP Start Patrol Wed Jun 24 17:08:18 GMT 1998 PICS Start Patrol **LOW-L PROBLEM**: Wed Jun 24 17:36:36 GMT 1998 Program stalled yesterday at 22:06:45, instrument head was stowed. This is the second crash of this nature while using the old, usually good, drive #0. We need to test the new drive #1 so I cycled the power and started the observations with data going to the Test Drive #1. I ejected and removed L00525 from Drive #0, had to clean the drive due to the blinking indicator LEDs, installed L00527 in drive #0. Wed Jun 24 18:01:28 GMT 1998 PICS Flat Wed Jun 24 18:02:54 GMT 1998 PICS End Flat Wed Jun 24 18:03:19 GMT 1998 CHIP Bias Wed Jun 24 18:04:24 GMT 1998 CHIP End Bias Wed Jun 24 18:04:32 GMT 1998 CHIP Water Wed Jun 24 18:05:14 GMT 1998 CHIP End Water Wed Jun 24 19:02:19 GMT 1998 PICS Flat Wed Jun 24 19:03:35 GMT 1998 CHIP Bias Wed Jun 24 19:03:43 GMT 1998 PICS End Flat Wed Jun 24 19:04:43 GMT 1998 CHIP End Bias Wed Jun 24 19:04:50 GMT 1998 CHIP Water Wed Jun 24 19:05:38 GMT 1998 CHIP End Water Wed Jun 24 20:02:26 GMT 1998 PICS Flat Wed Jun 24 20:03:18 GMT 1998 CHIP Gain Wed Jun 24 20:03:50 GMT 1998 PICS End Flat Wed Jun 24 20:08:08 GMT 1998 CHIP End Gain Wed Jun 24 20:08:17 GMT 1998 CHIP Bias Wed Jun 24 20:09:03 GMT 1998 CHIP End Bias Wed Jun 24 20:09:10 GMT 1998 CHIP Water Wed Jun 24 20:09:43 GMT 1998 CHIP End Water COMMENT: Wed Jun 24 20:15:09 GMT 1998 Extended the dome slot. Wed Jun 24 21:01:19 GMT 1998 CHIP Bias Wed Jun 24 21:02:20 GMT 1998 PICS Flat Wed Jun 24 21:02:25 GMT 1998 CHIP End Bias Wed Jun 24 21:02:33 GMT 1998 CHIP Water Wed Jun 24 21:03:18 GMT 1998 CHIP End Water Wed Jun 24 21:03:48 GMT 1998 PICS End Flat **LOW-L PROBLEM**: Wed Jun 24 22:01:00 GMT 1998 Program stalled at 21:22:00, instrument pointed at sun. Only 3 files on L00526 from Test Drive #1. Cycled power to PC, moved L00527 from drive #0 to #1, installed L00528 in drive #0. Will restart with data going to Test Drive #1 again. PICS End Flat Wed Jun 24 22:40:36 GMT 1998 CHIP CHIP End Patrol Wed Jun 24 22:41:35 GMT 1998 PICS End Patrol **LOW-L PROBLEM**: Wed Jun 24 22:59:34 GMT 1998 The last time this happened the weather was hot, like it is today, this lead David and I to think there could be a thermal problem. I checked the fans and they were working, but their filters were extremely filthy, probably due to the construction work last year. The computer cover over the power supply was pretty warm too. So I cleaned the filters and repositioned the equipment that was on the top of the computer so that there will be better heat loss through that cover. The computer then booted up correctly, so it probably was a thermal problem. I'll check the cover over the power supply occasionally to see if it gets as warm as it was. I also cleaned the inlet filter on the computer box. So the LOWL is up and running. Wed Jun 24 23:12:36 GMT 1998 CHIP ending tape COMMENT: Wed Jun 24 23:20:26 GMT 1998 TAPES: ****** PICS: P01227 CHIP: C00621 LOWL: L00526 and L00527 in Test Drive #1 Wed Jun 24 23:21:48 GMT 1998 MkIII