Content-Length: 3952 | pFad | https://download.hao.ucar.edu/d5/mlso/log/observer/1997/mlso.1997d256.olog

----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Sat Sep 13 16:51:27 GMT 1997 Year: 97 Doy: 256 Observer: koon WEATHER COMMENT: Sat Sep 13 16:51:32 GMT 1997 Clear sky, wind=5 mph from the South, temp=51 F. Sat Sep 13 16:52:07 GMT 1997 CHIP Startup--Initializing new tape Sat Sep 13 16:55:53 GMT 1997 dPMon Start Patrol Sat Sep 13 16:55:55 GMT 1997 CHIP CHIP Start Patrol Sat Sep 13 17:02:02 GMT 1997 dPMon Flat Sat Sep 13 17:02:59 GMT 1997 dPMon End Flat Sat Sep 13 17:03:03 GMT 1997 CHIP Bias Sat Sep 13 17:03:49 GMT 1997 CHIP End Bias Sat Sep 13 17:04:00 GMT 1997 CHIP Water Sat Sep 13 17:04:32 GMT 1997 CHIP End Water DPMON COMMENT: Sat Sep 13 17:18:45 GMT 1997 Nice, large, faint prominence loop at PA=315-330, out to RV=1.25 Sat Sep 13 18:01:59 GMT 1997 dPMon Flat Sat Sep 13 18:02:03 GMT 1997 CHIP Bias Sat Sep 13 18:02:54 GMT 1997 dPMon End Flat Sat Sep 13 18:02:52 GMT 1997 CHIP End Bias Sat Sep 13 18:03:00 GMT 1997 CHIP Water Sat Sep 13 18:03:35 GMT 1997 CHIP End Water WEATHER COMMENT: Sat Sep 13 18:56:05 GMT 1997 Getting some cirrus clouds. Sat Sep 13 19:01:14 GMT 1997 CHIP Bias Sat Sep 13 19:02:00 GMT 1997 dPMon Flat Sat Sep 13 19:02:06 GMT 1997 CHIP End Bias Sat Sep 13 19:02:16 GMT 1997 CHIP Water Sat Sep 13 19:02:45 GMT 1997 CHIP End Water Sat Sep 13 19:02:59 GMT 1997 dPMon End Flat LOW-L COMMENT: Sat Sep 13 19:15:05 GMT 1997 While we were rerouting the heat exchanger inlets and hoses Kim noticed that there was no air being pushed by the Smartfan. The display for Fan Voltage showed 99.95 so the fan should have been on all the time. The drive voltage was dropping too low to drive the fan even though the open circuit voltage was about 30.0 volts. So not enough current was getting through. We installed the spare smartfan module to see if that would solve the problem. Now the fan voltage is -80.0 and heading towards 0.0 We'll see if the fan functions eventually, it isn't working yet. DPMON COMMENT: Sat Sep 13 19:20:42 GMT 1997 The thin loop prominence that was at PA=315-330 has faded away now. Sat Sep 13 20:01:59 GMT 1997 dPMon Flat Sat Sep 13 20:02:55 GMT 1997 dPMon End Flat Sat Sep 13 20:03:05 GMT 1997 CHIP Gain Sat Sep 13 20:07:21 GMT 1997 CHIP End Gain Sat Sep 13 20:07:30 GMT 1997 CHIP Bias Sat Sep 13 20:08:12 GMT 1997 CHIP End Bias Sat Sep 13 20:08:21 GMT 1997 CHIP Water Sat Sep 13 20:08:52 GMT 1997 CHIP End Water COMMENT: Sat Sep 13 20:23:34 GMT 1997 Extended the dome slot. Sat Sep 13 21:01:03 GMT 1997 CHIP Bias Sat Sep 13 21:01:49 GMT 1997 CHIP End Bias Sat Sep 13 21:02:02 GMT 1997 dPMon Flat Sat Sep 13 21:01:59 GMT 1997 CHIP Water Sat Sep 13 21:02:36 GMT 1997 CHIP End Water Sat Sep 13 21:02:59 GMT 1997 dPMon End Flat WEATHER COMMENT: Sat Sep 13 21:59:49 GMT 1997 Orographic clouds are moving over. Sat Sep 13 22:01:57 GMT 1997 dPMon Flat Sat Sep 13 22:02:51 GMT 1997 dPMon End Flat Sat Sep 13 22:03:03 GMT 1997 CHIP Bias Sat Sep 13 22:03:58 GMT 1997 CHIP End Bias Sat Sep 13 22:04:08 GMT 1997 CHIP Water Sat Sep 13 22:04:45 GMT 1997 CHIP End Water Sat Sep 13 22:48:57 GMT 1997 dPMon End Patrol Sat Sep 13 22:49:34 GMT 1997 CHIP CHIP End Patrol Sat Sep 13 22:58:35 GMT 1997 CHIP ending tape COMMENT: Sat Sep 13 22:58:41 GMT 1997 Activity report: QP: 42; 65-80; 130; 204; 248; 298. AP: Large but faint loop prominence at PA=315-330, RV=1.25, visible from start of observations until around 1920ut. No coronal activity. TAPES: ****** MKIII: Down for changeover work. DPMON: P00985 CHIP: C00406 LOWL: L00472 in drive #0 LOW-L COMMENT: Sat Sep 13 23:04:21 GMT 1997 Weather didn't get hot enough to test the spare Smartfan module, it is installed loosely and the Lowl is closed up for now. Problem may also be a bad power supply that the module regulates, but we are trying out the module first.

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