Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Sun Feb 19 17:15:38 GMT 1995 Year: 95 Doy: 050 Observer: yasukawa WEATHER COMMENT: Sun Feb 19 17:16:20 GMT 1995 Cool, clear, light southwest wind. Temp=42F. MKIII COMMENT: Sun Feb 19 17:22:40 GMT 1995 Tried using only puffs from bulb to clean O1. Sun Feb 19 17:23:27 GMT 1995: Patrol Start MKIII COMMENT: Sun Feb 19 17:51:16 GMT 1995 Coronal image noisy at E and W wings, P+S looks a bit high. Unsure if that is the sky or dust on O1 that is difficult to remove with puffer. Sun Feb 19 18:00:01 GMT 1995: Calibration MKIII COMMENT: Sun Feb 19 18:09:07 GMT 1995 Must've been sky, noisy wings are gone. MKIII COMMENT: Sun Feb 19 19:01:39 GMT 1995 Pockets of something can be seen in P+S signal occasionally moving across scan. Sun Feb 19 19:02:56 GMT 1995: Calibration DPMON COMMENT: Sun Feb 19 19:22:19 GMT 1995 Faint top[ of arch or loop prominence visible at PA 240 about 1.2 RV. Hard to discern, but may have a footpoint at or near prominence that was visible this morning at PA 230. DPMON COMMENT: Sun Feb 19 19:31:32 GMT 1995 I don't see that prominence top at PA 240 any more. It either faded or moved out of FOV very rapidly. MKIII COMMENT: Sun Feb 19 19:36:19 GMT 1995 Enhancement in corona overlying prominence activity region. There is also some streaking-type artifacts in VDIFF. Checking it out. MKIII COMMENT: Sun Feb 19 19:43:14 GMT 1995 There was a smudge on the back surface of the O1. Wiped it off with a cleaning tissue and dusted off O1 with bulb. MKIII COMMENT: Sun Feb 19 20:00:39 GMT 1995 CME is definitely occurring over PA 240. Subtle effects seen between PA 240-290. Streaking artifact seems to be gone. Must've been the contamination on the O1. Sun Feb 19 20:03:01 GMT 1995: Calibration COMMENT: Sun Feb 19 20:12:27 GMT 1995 Sent out preliminary CMELST alert. MKIII COMMENT: Sun Feb 19 20:22:29 GMT 1995 Coronal changes still seen in current VDIFFs, changes do not show up on high resolution NDIFFs. MKIII COMMENT: Sun Feb 19 20:53:01 GMT 1995 Coronal changes either gone or very subtle. Sun Feb 19 21:00:01 GMT 1995: Calibration WEATHER COMMENT: Sun Feb 19 21:36:34 GMT 1995 Sky getting noisy. Wind coming from west, slightly upslope. Sun Feb 19 22:03:06 GMT 1995: Calibration Sun Feb 19 23:03:07 GMT 1995: Calibration Sun Feb 19 23:03:57 GMT 1995: Patrol End COMMENT: Sun Feb 19 23:05:54 GMT 1995 Activity report: QP: 66; 72; 106; 117; 285; 305' EPL: Pa 230-240, RV 1.2+, from before 1922-1931 UT. CME: Coronal changes occurred between PA 240-290 Between around 1922-2053 UT. TAPES: MKIII: H00969 DPMON: P00287 LOWL: L00186 Sun Feb 19 23:09:32 GMT 1995: Filemark SCAN-LOG SCAN-LOG 17:26:04. 2/19/95 DOY 50 17:33:33 17:36:49 17:40:02 17:43:16 17:46:28 17:49:42 17:52:53 17:56:14 17:59:26 18:02:41 18:05:52 18:09:05 18:12:15 18:15:26 18:18:36 18:21:47 18:24:56 1828 0 CL 18:31:47 1836 15CL 18:40:51 18:45:28 18:48:38 18:51:50 18:55:01 18:58:13 19:01:25 19:04:44 19:07:57 19:11:14 19:14:25 19:17:36 19:20:47 19:23:58 19:27:08 19:30:21 19:33:33 19:36:48 19:39:58 19:43:10 19:46:20 19:49:32 19:52:43 19:55:58 19:59:09 20:02:20 20:05:29 20:08:40 20:11:49 20:15:01 20:18:13 20:21:26 20:24:36 20:27:46 20:30:55 20:34:06 20:37:15 20:40:27 20:43:38 20:46:48 20:49:57 20:53:07 20:56:16 20:59:27 21:02:36 21:05:48 21:08:58 21:12:11 21:15:20 21:18:30 21:21:39 21:24:49 21:27:58 21:31:08 21:34:17 21:37:29 21:40:39 21:43:50 21:46:59 21:50:10 21:53:18 21:56:28 21:59:36 22:02:48 22:05:57 22:09:06 22:12:11 22:15:18 22:18:23 22:21:30 22:24:36 22:27:43 22:30:50 22:33:58 22:37:05 22:40:13 22:43:22 22:46:30 22:49:37 22:52:46 22:55:53 22:59:03 0 ERRORS OK