Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Mon Oct 17 16:45:08 GMT 1994 Year: 94 Doy: 290 Observer: yasukawa WEATHER COMMENT: Mon Oct 17 16:45:25 GMT 1994 Cold, in cirrus overcast, light southeast breeze. Temp=41F, frost on ground. MKIII COMMENT: Mon Oct 17 17:16:50 GMT 1994 In order to avoid having to swap LEMO connectors each time I work on channel 2 (to get START and DATA pulses to the DCSA), I jumpered pins 11 to 14 and pins 12 to 15 on the flat cable between the Spar isolator card in the micro and the Digital Isolator box in the back of the rack. The jumpers were placed on the wire-wrap pins on the bulkhead connector on the digital isolator box. These send the START1 (STARTB) pulses from the line driver from the micro to the optoisolators supplying START1 and START2 (B & C) to the spar. WEATHER COMMENT: Mon Oct 17 17:34:15 GMT 1994 There are scattered orographic clouds forming around site. MKIII COMMENT: Mon Oct 17 17:54:50 GMT 1994 The jumper works. START and DATA pulses now available to Opto4 DCSA. WEATHER COMMENT: Mon Oct 17 17:56:04 GMT 1994 In small hole in clouds, starting up. Mon Oct 17 17:56:30 GMT 1994: Patrol Start Mon Oct 17 18:00:03 GMT 1994: Calibration WEATHER COMMENT: Mon Oct 17 18:06:14 GMT 1994 Hole closed up. In orographic clouds. MKIII COMMENT: Mon Oct 17 18:09:13 GMT 1994 Aborted mkiii calibration. COMMENT: Mon Oct 17 18:14:25 GMT 1994 Stopping observations. Cirrus and orographic clouds. Mon Oct 17 18:14:57 GMT 1994: Patrol End Mon Oct 17 18:23:29 GMT 1994: Patrol Start Mon Oct 17 18:24:38 GMT 1994: Patrol End Mon Oct 17 18:30:29 GMT 1994: Patrol Start Mon Oct 17 18:45:00 GMT 1994: Patrol End Mon Oct 17 18:59:23 GMT 1994: Patrol Start Mon Oct 17 19:00:22 GMT 1994: Calibration WEATHER COMMENT: Mon Oct 17 19:10:02 GMT 1994 In heavy orographic clouds again. Have been in and out of clouds and have not been successful getting a complete mkiii scan of late. Did get a scan earlier though. atrol End WEATHER COMMENT: Mon Oct 17 20:47:52 GMT 1994 In heavy fog now. COMMENT: Mon Oct 17 20:48:21 GMT 1994 Removed some slippage in bench angle encoder and doing some priming and painting during clouds. COMMENT: Mon Oct 17 22:15:11 GMT 1994 ****************************************************************** Koon taking over cloud-watch from Yasukawa soon. ****************************************************************** WEATHER COMMENT: Mon Oct 17 22:17:47 GMT 1994 Starting to rain. Dome is closed. WEATHER COMMENT: Tue Oct 18 00:37:46 GMT 1994 Getting thunder and hail. MKIII COMMENT: Tue Oct 18 04:47:01 GMT 1994 Worked on the tilt plates today. The axles for the front plate were both loose, when put in place with "15 tilt" command this plate would sometimes stay at the "in" position. I took the mechanism apart and tightened the axles and used some clear nail polish to help prevent the screws from loosening. Also loosened the clutch slightly to reduce the impulsive stress loads on everything, this may help to prevent future axle loosening. Gear lash is still evident (1 or 2 degrees between plates) but plates are much tighter. Related to gear lash, the plates tend to be closer to each other (smaller angle) when the spar is pointed straight up, and they are farther apart (wider angle) when the spar is pointed to the east and flat. So for consistent calibrations we should do them at close to the same RA position of the spar. Will need a few minutes in the morning to finish testing and assembling tilt plate enclosure. COMMENT: Tue Oct 18 05:05:30 GMT 1994 Activity report: QP: 50; 85-95; 113; 218; 280; 306. No coronal activity. TAPES: MKIII: H00868 DPMON: P00188 LOW-L: L00118 in drive #0 Tue Oct 18 05:07:32 GMT 1994: Filemark SCAN-LOG SCAN-LOG 17:38:44. 10/17/94 DOY 290 17:55:30 17:58:44 18:01:56 1806 0 CL 18:09:08 18:12:21 18:31:08 18:34:19 18:37:32 18:40:44 18:43:56 18:47:07 18:50:19 18:53:29 18:56:41 18:59:51 19:03:02 19:06:12 19:09:25 0 ERRORS OK