----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Sat May 8 16:57:03 GMT 1999 Year: 99 Doy: 128 Observer: koon Sat May 8 16:57:41 GMT 1999 CHIP Startup--Initializing new tape WEATHER COMMENT: Sat May 8 16:59:28 GMT 1999 Thin cirrostratus, wind=5 mph from the SE, temp=45 F. Sat May 8 16:59:40 GMT 1999 CHIP CHIP Start Patrol Sat May 8 16:59:40 GMT 1999 CHIP CHIP Start Patrol Sat May 8 17:03:00 GMT 1999 CHIP Bias Sat May 8 17:03:55 GMT 1999 CHIP End Bias Sat May 8 17:04:04 GMT 1999 CHIP Water Sat May 8 17:04:43 GMT 1999 CHIP End Water MKIV COMMENT: Sat May 8 17:05:23 GMT 1999 Scans look bad, radial streaks are present, but so are clouds. **CHIP PROBLEM**: Sat May 8 17:06:08 GMT 1999 Filter temperature is high at 39.9 **PICS PROBLEM**: Sat May 8 17:11:34 GMT 1999 Stalled with Program:H-alpha.disc, and no Camera window. Tried Kill/Run sequence but still didn't get a Camera window, and the Camera task is listed as running. **CHIP PROBLEM**: Sat May 8 17:21:29 GMT 1999 Temperature seems to be steady at around 39.960, and the images do look bad so that is probably an accurate temperature reading, maybe the setpoint needs to be changed, I'll check it after I get some of the other instruments stabilized. **PICS PROBLEM**: Sat May 8 17:25:30 GMT 1999 Halted and cycled power to the Sparcstation. **MKIV PROBLEM**: Sat May 8 17:26:14 GMT 1999 Radial streaks are diminishing and now the scans just look washed out from the bright sky, the clouds are very thin now. WEATHER COMMENT: Sat May 8 17:29:22 GMT 1999 Clouds have thinned out quite a bit. **PICS PROBLEM**: Sat May 8 17:32:25 GMT 1999 OK, now I have a Camera window and the Patrol is working. **MKIV PROBLEM**: Sat May 8 17:37:13 GMT 1999 Scans are looking fine now and cirrostratus is gone, but sky is still a little bright. Sat May 8 18:00:38 GMT 1999 PICS Flat Sat May 8 18:01:49 GMT 1999 CHIP Bias Sat May 8 18:02:06 GMT 1999 PICS End Flat Sat May 8 18:02:42 GMT 1999 CHIP End Bias Sat May 8 18:03:00 GMT 1999 CHIP Water Sat May 8 18:03:46 GMT 1999 CHIP End Water **CHIP PROBLEM**: Sat May 8 18:35:22 GMT 1999 Filter Temperature at 40.114 Sat May 8 18:44:25 GMT 1999 MKIII Start Cal Sat May 8 19:00:28 GMT 1999 PICS Flat Sat May 8 19:00:53 GMT 1999 CHIP Bias Sat May 8 19:01:46 GMT 1999 CHIP End Bias Sat May 8 19:01:57 GMT 1999 CHIP Water Sat May 8 19:01:57 GMT 1999 CHIP Water Sat May 8 19:02:36 GMT 1999 CHIP End Water Sat May 8 19:07:51 GMT 1999 MKIII Start Patrol WEATHER COMMENT: Sat May 8 19:15:16 GMT 1999 Cirrus clouds are moving in again. **CHIP PROBLEM**: Sat May 8 19:18:31 GMT 1999 Filter temp up to 40.280 Sat May 8 20:00:33 GMT 1999 PICS Flat Sat May 8 20:02:03 GMT 1999 PICS End Flat Sat May 8 20:02:48 GMT 1999 CHIP Gain Sat May 8 20:07:19 GMT 1999 CHIP End Gain Sat May 8 20:07:38 GMT 1999 CHIP Bias Sat May 8 20:08:34 GMT 1999 CHIP End Bias Sat May 8 20:08:44 GMT 1999 CHIP Water Sat May 8 20:09:19 GMT 1999 CHIP End Water **CHIP PROBLEM**: Sat May 8 20:16:22 GMT 1999 Filter temp=40.452, thermistor testpoint=0.542, setpoint testpoint=0.633 I have read through the filter log book and the temperature controller manual to try to understand what is going on. I'm still not sure, but Greg noted a similar problem back around 8/18/95, he determined that a LM324 failed due to overvoltage, and had the controller board replaced and voltage limits corrected so that an overvoltage would not be able to occur again. COMMENT: Sat May 8 20:23:53 GMT 1999 Extended the Dome slot. **CHIP PROBLEM**: Sat May 8 20:24:05 GMT 1999 Filter temp=40.472, thermistor testpoint=0.541, setpoint testpoint=0.643 which is very close to the 0.644 that Eric reported as being the desired setpoint voltage. MKIV COMMENT: Sat May 8 20:25:53 GMT 1999 Pausing due to clouds. Sat May 8 20:30:36 GMT 1999 MKIII End Patrol **CHIP PROBLEM**: Sat May 8 20:57:07 GMT 1999 It looks like the thermistor reading of 0.541 vdc is about right for the temperature of about 40 C that is shown on the observing screen. The setpoint reading also looks correct. So it appears the temperature control board is receiving the correct input but not giving the correct ouput, it gives 10 vdc or nothing (occasionally). I removed the controller and brought it downstairs for an examination. **CHIP PROBLEM**: Sat May 8 21:27:39 GMT 1999 I couldn't find anything wrong inside the temperature controller box, but if any ICs are bad I wouldn't know. As a final test I waited for the Filter temp reading to drop to within range (34.5 C) and then I reconnected the temperature controller and turned it back on and read the voltages again. The setpoint still reads 0.644 vdc as it should, the output is 10 vdc (fullpower for heating I think), and the thermistor read 0.697 which seems reasonable for the temperature of the filter at the time I read it, it was about 34.3 C according to the observing screen readout downstairs. I watched the observing readout and it drop to about 34.1 before starting to rise. The normal range for the filter should be 34.3 to 34.5 according to the observing screen limits. Also, the images looked fairly good when the screen readout showed the filter temperature was within range, so the readout must be correct. COMMENT: Sat May 8 21:37:18 GMT 1999 Lost guiding in Dec, repointed and reset the guider. Sat May 8 22:00:31 GMT 1999 PICS Flat Sat May 8 22:01:58 GMT 1999 PICS End Flat Sat May 8 22:02:48 GMT 1999 CHIP Bias Sat May 8 22:03:42 GMT 1999 CHIP End Bias Sat May 8 22:03:52 GMT 1999 CHIP Water Sat May 8 22:04:35 GMT 1999 CHIP End Water Sat May 8 22:40:39 GMT 1999 PICS End Patrol Sat May 8 22:41:52 GMT 1999 CHIP ending tape CHIP COMMENT: Sat May 8 22:42:00 GMT 1999 No data due to bad filter temperature controller, will reuse the tape. **CHIP PROBLEM**: Sat May 8 22:58:06 GMT 1999 I removed the filter temperature controller box from the Spar, the controller board inside it was driving the filter to unwanted temperatures and so we can't use the CHIP again until we solve that problem which will probably require a new controller board, I've sent out email asking how to proceed from here. COMMENT: Sat May 8 23:01:03 GMT 1999 TAPES: ****** MKIV: 99128 PICS: P01434 LOWL: L00597 in drive #0 CHIP: No data, down for repair. Sat May 8 23:07:06 GMT 1999 MkIII 16_59.rawmk3 17_44.rawmk3 18_29.rawmk3 19_26.rawmk3 20_11.rawmk3 17_03.rawmk3 17_48.rawmk3 18_33.rawmk3 19_30.rawmk3 20_15.rawmk3 17_06.rawmk3 17_51.rawmk3 18_37.rawmk3 19_34.rawmk3 20_19.rawmk3 17_10.rawmk3 17_55.rawmk3 18_40.rawmk3 19_37.rawmk3 20_23.rawmk3 17_14.rawmk3 17_59.rawmk3 18_48.rawmk3 19_41.rawmk3 20_26.rawmk3 17_18.rawmk3 18_03.rawmk3 18_56.rawmk3 19_45.rawmk3 c18_44.rawmk3 17_21.rawmk3 18_07.rawmk3 19_04.rawmk3 19_49.rawmk3 c18_52.rawmk3 17_25.rawmk3 18_10.rawmk3 19_07.rawmk3 19_52.rawmk3 c19_00.rawmk3 17_29.rawmk3 18_14.rawmk3 19_11.rawmk3 19_56.rawmk3 17_33.rawmk3 18_18.rawmk3 19_15.rawmk3 20_00.rawmk3 17_36.rawmk3 18_21.rawmk3 19_19.rawmk3 20_04.rawmk3 17_40.rawmk3 18_25.rawmk3 19_22.rawmk3 20_08.rawmk3