----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Sat Jun 1 16:44:17 GMT 1996 Year: 96 Doy: 153 Observer: koon WEATHER COMMENT: Sat Jun 1 16:44:27 GMT 1996 Clear sky, wind=10 mph from the SE, temp=49 F. Sat Jun 1 16:45:06 GMT 1996 CHIP Startup--Initializing new tape Sat Jun 1 16:48:37 GMT 1996 dPMon Start Patrol Sat Jun 1 16:48:54 GMT 1996 CHIP CHIP Start Patrol Sat Jun 1 17:00:50 GMT 1996 dPMon Filemark Sat Jun 1 17:00:54 GMT 1996 dPMon Flat Sat Jun 1 17:01:18 GMT 1996 CHIP CHIP Filemark Sat Jun 1 17:01:42 GMT 1996 dPMon End Flat Sat Jun 1 17:01:36 GMT 1996 CHIP Flat Sat Jun 1 17:06:28 GMT 1996 CHIP End Flat Sat Jun 1 18:00:20 GMT 1996 CHIP CHIP Filemark Sat Jun 1 18:00:38 GMT 1996 CHIP Flat Sat Jun 1 18:00:58 GMT 1996 dPMon Filemark Sat Jun 1 18:01:02 GMT 1996 dPMon Flat Sat Jun 1 18:01:49 GMT 1996 dPMon End Flat Sat Jun 1 18:05:23 GMT 1996 CHIP End Flat Sat Jun 1 19:00:47 GMT 1996 dPMon Filemark Sat Jun 1 19:00:52 GMT 1996 dPMon Flat Sat Jun 1 19:01:39 GMT 1996 dPMon End Flat Sat Jun 1 19:02:27 GMT 1996 CHIP CHIP Filemark Sat Jun 1 19:05:53 GMT 1996 CHIP Flat Sat Jun 1 19:09:14 GMT 1996 dPMon End Patrol Sat Jun 1 19:11:17 GMT 1996 CHIP End Flat DPMON COMMENT: Sat Jun 1 19:12:23 GMT 1996 Pausing Patrol to do some testing to see why we have the occulting problem after the occulting wheel moves, in the morning. It appears that the occulting disk itself is moved to the South after it is put in place after the disk image, then it slowly comes back up to the correct position. Eric noticed that the prominences were staying in the same place through the bad occulting and I verified that today, also verified that the occulting disk position is actually changing with respect to the camera. DPMON COMMENT: Sat Jun 1 19:21:38 GMT 1996 With the occulting disk in and the video program running I can see that there is some play in the occulting wheel. When I move it from one side of the play to the other the image of the disk moves North and South corresponding to our normal occulting when it is North and to our occulting problem when it is South. To move to North limit of play the wheel is moved CW when viewed from the O1 side of the occulting wheel. Sat Jun 1 19:51:15 GMT 1996 dPMon Start Patrol DPMON COMMENT: Sat Jun 1 19:51:21 GMT 1996 The occulting wheel play appears to be present regardless of the wheel position. So the wheel must be unbalanced by the thick aluminum mount I just noticed at one of the occulting wheel openings, probably to be used for the Lowk instrument. We may have to balance the wheel somehow. I just restarted the Patrol program and noticed that the limb images show that the occulting disk is always to the South now. Since I haven't changed the occulting since this morning it appears that when the wheel axis is near horizontal in the morning the imbalance pulls it CW (viewed from O1 side) and as the Spar points more vertical the wheel axis becomes more vertical and the imbalance gradually exerts less torque on the wheel and it tends to stay where it was left after it gets moved. Then around 1900 ut the imbalance torque no longer can overcome the wheel rotational friction and the wheel stays put after being moved. So what we see if we don't touch the occulting adjustments is an occulter that gets pulled quickly to the North in the early morning, then it gets pulled more slowly to the North as the morning progresses (this is when we notice the change in occulting) and finally it no longer gets pulled to the North and the occulting remains stable. I can verify that the occulting wheel stays to the CW side of the play in the early morning on my next shift. The solution is to balance the wheel by adding weight 180 degrees opposite of the thick aluminum mount on the wheel, but until then we can assure good limb images are going to tape by adjusting the occulting normally in the morning until we notice the occulting problem, then adjust occulting so that the first image shown after the disk image is occulted correctly, this means that the limb images we see mid-morning when no data are written will not be occulted correctly, the sun will spill over in the South. DPMON COMMENT: Sat Jun 1 20:25:26 GMT 1996 I have restarted the Patrol program with proper occulting, about 30 minutes ago. COMMENT: Sat Jun 1 20:26:03 GMT 1996 extended dome slot. DPMON COMMENT: Sat Jun 1 20:37:29 GMT 1996 Pausing Patrol to test Optics commands, when trying to control the optics via software I noticed that the filter wheel commands move the objective wheel and vice versa, and the occulting wheel commands move the polarizer wheel (or at least try to, it times out), and vice versa. I just checked the Optics using the mouse and monitor selections and these appear to work properly. So maybe some software changes are needed? DPMON COMMENT: Sat Jun 1 20:56:34 GMT 1996 I had a problem when I exited Patrol a while back, the Optics field was Busy and the Patrol wouldn't exit correctly. So I typed Kill in the Console window, then made sure onlt the tasks Xsun and Camera were active, then I typed Run in the Console window and brought up Patrol again. I didn't select EndDay or NewDay and was able to continue writing to the same tape as David suggested earlier for a previous CHIP problem, very nice! Sat Jun 1 21:01:23 GMT 1996 CHIP CHIP Filemark Sat Jun 1 21:01:37 GMT 1996 CHIP Flat Sat Jun 1 21:02:55 GMT 1996 dPMon Filemark Sat Jun 1 21:02:59 GMT 1996 dPMon Flat Sat Jun 1 21:03:47 GMT 1996 dPMon End Flat Sat Jun 1 21:06:28 GMT 1996 CHIP End Flat Sat Jun 1 22:00:21 GMT 1996 CHIP CHIP Filemark Sat Jun 1 22:00:38 GMT 1996 CHIP Flat Sat Jun 1 22:02:51 GMT 1996 dPMon Filemark Sat Jun 1 22:02:56 GMT 1996 dPMon Flat Sat Jun 1 22:03:43 GMT 1996 dPMon End Flat Sat Jun 1 22:05:25 GMT 1996 CHIP End Flat Sat Jun 1 22:08:55 GMT 1996 dPMon End Patrol Sat Jun 1 22:11:33 GMT 1996 CHIP CHIP End Patrol Sat Jun 1 22:28:21 GMT 1996 CHIP ending tape COMMENT: Sat Jun 1 22:28:32 GMT 1996 Activity report: QP: 65; 104; 123; 220-240; 288. No coronal activity. TAPES: ****** MKIII: H01306 DPMON: P00625 CHIP: C00042 LOWL: L00396 in drive #1 SCAN-LOG SCAN-LOG 16:52:30. 6/1/96 DOY 153 16:58:07 17:01:22 17:04:37 17:07:52 17:11:04 17:14:19 17:17:31 17:20:43 17:23:56 17:27:09 17:30:21 17:33:33 17:36:45 17:39:57 17:43:09 17:46:26 17:49:36 17:52:47 17:55:57 17:59:08 1808 0 CL 18:11:49 1822 15CL 18:35:33 18:40:23 18:43:33 18:46:50 18:50:02 18:53:18 18:56:28 18:59:39 19:02:49 19:06:00 19:09:10 19:12:21 19:15:31 19:18:42 19:21:52 19:25:05 19:28:15 19:31:27 19:34:37 19:37:48 19:40:58 19:44:09 19:47:19 19:50:31 19:53:41 19:56:54 20:00:06 20:03:19 20:06:29 20:09:41 20:12:51 20:16:02 20:19:12 20:22:23 20:25:34 20:28:45 20:31:57 20:35:15 20:38:25 20:41:37 20:44:47 20:47:59 20:51:09 20:54:26 20:57:39 21:00:51 21:04:03 21:07:14 21:10:25 21:13:36 21:16:47 21:19:58 21:23:08 21:26:20 21:29:31 21:32:44 21:35:54 21:39:06 21:42:16 21:45:28 21:48:39 21:51:50 21:55:01 21:58:12 22:01:24 22:04:42 22:07:52 0 ERRORS OK