Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Thu Aug 25 16:25:28 GMT 1994 Year: 94 Doy: 237 Observer: yasukawa WEATHER COMMENT: Thu Aug 25 16:26:07 GMT 1994 Cold, in cirrus overcast, south wind. Temp = 41F. Thu Aug 25 16:35:36 GMT 1994: Patrol Start Thu Aug 25 17:00:04 GMT 1994: Calibration WEATHER COMMENT: Thu Aug 25 17:17:16 GMT 1994 Hole may be approaching. MKIII COMMENT: Thu Aug 25 17:41:54 GMT 1994 Clear hole allowed a good scan beginning at 1737 MKIII COMMENT: Thu Aug 25 17:52:11 GMT 1994 Still in good hole. Calibrating. DPMON COMMENT: Thu Aug 25 17:52:35 GMT 1994 Halle runaway. Reset Plessey to attempt fix. Thu Aug 25 18:03:00 GMT 1994: Calibration DPMON COMMENT: Thu Aug 25 18:27:03 GMT 1994 Disc preferred mode set-up. COMMENT: Thu Aug 25 18:47:09 GMT 1994 Back in cirrus. Looks very extensive. Stopping observations. DPMON COMMENT: Thu Aug 25 18:47:57 GMT 1994 Restored limb-preferred mode. Thu Aug 25 18:50:03 GMT 1994: Patrol End DPMON COMMENT: Thu Aug 25 18:55:00 GMT 1994 Coude encoder had slipped about 20 degrees, probably on a long observing day, or on a cloudy day where Coude was not unwound and dome power allowed the clock drive to run. Bench shaft is bent slightly, so, at some point late in the PM or equivalent bench position, bench and encoder gear may become disengaged. Restored encoder mesh. WEATHER COMMENT: Thu Aug 25 20:31:20 GMT 1994 Clear hole. Restarting observing systems. Brushed front surface MKIII O1. Thu Aug 25 20:32:28 GMT 1994: Patrol Start WEATHER COMMENT: Thu Aug 25 20:34:00 GMT 1994 There is thin cirrus in the hole. WEATHER COMMENT: Thu Aug 25 20:41:23 GMT 1994 Back in thicker cirrus that is again extensive. Stopping observing systems. Thu Aug 25 20:42:03 GMT 1994: Patrol End COMMENT: Thu Aug 25 22:55:27 GMT 1994 ################################################### Observer: yasukawa replaced by chu ################################################### Continuing cirrus vigil. Possible hole to South. Will wait and see. COMMENT: Fri Aug 26 02:07:28 GMT 1994 Still in extensive cirrostratus. Haven't been any holes since early this morning. Chances of getting more data is poor. Activity Report: QP: 97-105; 125; 212-220; 242; 275-285; 298. No Coronal Activity. Tapes: MKIII: H00831 DPMON: P00143 LOW-L: L00098 running in unit 1 Fri Aug 26 02:10:44 GMT 1994: Filemark SCAN-LOG SCAN-LOG 16:34:33. 8/25/94 DOY 237 17:18:03 17:21:16 17:24:30 17:27:43 17:30:58 17:34:10 17:37:26 17:40:38 17:43:52 17:47:03 1751 0 CL 17:55:55 1800 15CL 18:05:26 18:09:54 18:13:06 18:16:19 18:19:31 18:22:47 18:26:00 18:29:22 18:32:33 18:35:45 18:38:58 18:42:10 20:33:42 20:36:52 20:40:00 0 ERRORS OK