----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Fri Oct 8 16:37:28 GMT 1999 Year: 99 Doy: 281 Observer: yasukawa WEATHER COMMENT: Fri Oct 8 16:40:52 GMT 1999 Cool, in continued cirrostratus, thinner today, brisk southeast wind. Fri Oct 8 16:52:43 GMT 1999 CHIP Startup--Initializing new tape Fri Oct 8 16:53:24 GMT 1999 PICS Start Patrol Fri Oct 8 16:55:12 GMT 1999 CHIP CHIP Start Patrol Fri Oct 8 17:00:05 GMT 1999 MKIV Start Patrol Fri Oct 8 17:02:03 GMT 1999 CHIP Bias Fri Oct 8 17:02:56 GMT 1999 CHIP End Bias Fri Oct 8 17:03:05 GMT 1999 CHIP Water Fri Oct 8 17:03:47 GMT 1999 CHIP End Water **MKIV PROBLEM**: Fri Oct 8 17:16:01 GMT 1999 Getting error messages at end of each scan. Sun looking at dome wall and also looking thru cirrus. San images are radially streaked. Resetting KCC to see what goes away. Fri Oct 8 17:30:08 GMT 1999 MKIV Start Patrol WEATHER COMMENT: Fri Oct 8 17:35:10 GMT 1999 clear but bright sky or thin cirrus. Fri Oct 8 18:00:38 GMT 1999 PICS Flat Fri Oct 8 18:00:59 GMT 1999 CHIP Bias Fri Oct 8 18:02:02 GMT 1999 CHIP End Bias Fri Oct 8 18:02:18 GMT 1999 CHIP Water Fri Oct 8 18:03:14 GMT 1999 PICS End Flat Fri Oct 8 18:03:14 GMT 1999 PICS End Flat MKIV COMMENT: Fri Oct 8 18:12:00 GMT 1999 Moderate thickness cirrus moved in during calibration. **MKIV PROBLEM**: Fri Oct 8 18:39:55 GMT 1999 Checked out 64/rot signal at various points. Looked thru old micro drawings ad did not see any special termination for the modulator signals that came down from the encoder. 64/rot signal looked clean and sharp at the input from the spar at the old microprocessor digital isolator panel test points in the rear of the MKIV rack, at the output of U42 (optoisolator pin 7) on the transformation board and at the output of U36 (OR gate pin 3) on the transformation board. Output of U36 was 4V and did not looked loaded down by the number of gates it needed to feed, no ringing or rounded edges apparent. Fri Oct 8 18:48:13 GMT 1999 MKIV Start Patrol **MKIV PROBLEM**: Fri Oct 8 18:51:03 GMT 1999 Fri Oct 8 19:01:05 GMT 1999 CHIP Bias Fri Oct 8 19:01:33 GMT 1999 PICS polarization_calibration Fri Oct 8 19:02:18 GMT 1999 CHIP End Bias Fri Oct 8 19:02:31 GMT 1999 CHIP Water Fri Oct 8 19:03:12 GMT 1999 CHIP End Water LOW-L COMMENT: Fri Oct 8 19:05:04 GMT 1999 Changed setpoint of wing2 controller to 134.0 as requested by Tomczyk several days ago. Ron sent instructions on how to do that yesterday afternoon (controller was changed out and no longer responds to computer input as before). Setpoint was 133.1 not 130 as mentioned by Steve. WEATHER COMMENT: Fri Oct 8 19:26:27 GMT 1999 Clear hole. MKIV COMMENT: Fri Oct 8 19:29:58 GMT 1999 1924 scan was good, Attempting another cal, hole may contain thin cirrus occasionally. **MKIV PROBLEM**: Fri Oct 8 19:31:09 GMT 1999 Xanim image does not look good (1924 and 1927). Image is almost dark grey background and white inner corona with no grey scale in between. WEATHER COMMENT: Fri Oct 8 19:35:59 GMT 1999 In cirrus streak. Fri Oct 8 20:00:59 GMT 1999 CHIP Gain Fri Oct 8 20:06:48 GMT 1999 CHIP End Gain Fri Oct 8 20:06:59 GMT 1999 CHIP Bias Fri Oct 8 20:07:54 GMT 1999 CHIP End Bias Fri Oct 8 20:08:06 GMT 1999 CHIP Water Fri Oct 8 20:08:48 GMT 1999 CHIP End Water LOW-L COMMENT: Fri Oct 8 20:09:22 GMT 1999 Set point changed to 138.0, a net change of 5 degrees from where it was originally set (actually 4.9 degrees net). This change was clarified by Steve. Changed gui to reflect the change. **MKIV PROBLEM**: Fri Oct 8 20:39:42 GMT 1999 Looked at the differential outputs from the drivers connected to the output of U36 on the transformation board and found all outputs to be sharp, clean square waves except for the outputs of U15 pin 11, U16 pin 3 and U16 pin 6, which were almost flat except for very low-level square wave, probably due to leakage. MKIV COMMENT: Fri Oct 8 20:47:39 GMT 1999 Stopped after cal, in moderate to thin cirrus overcast. Fri Oct 8 21:00:59 GMT 1999 CHIP Bias Fri Oct 8 21:01:57 GMT 1999 CHIP End Bias Fri Oct 8 21:02:08 GMT 1999 CHIP Water Fri Oct 8 21:02:53 GMT 1999 CHIP End Water Fri Oct 8 22:00:59 GMT 1999 CHIP Bias Fri Oct 8 22:02:00 GMT 1999 CHIP End Bias Fri Oct 8 22:02:11 GMT 1999 CHIP Water Fri Oct 8 22:02:58 GMT 1999 CHIP End Water COMMENT: Fri Oct 8 22:03:59 GMT 1999 CHIP and PICS got domed out. Stopping. atrol Fri Oct 8 22:06:21 GMT 1999 CHIP CHIP End Patrol COMMENT: Fri Oct 8 22:07:09 GMT 1999 Tapes: MKIV: 99-281 PICS: P01568 CHIP: C00943 LOWL: L00633 in drive #0 Fri Oct 8 22:11:11 GMT 1999 MkIV 17_00.rawmk4 17_39.rawmk4 18_09.rawmk4 19_06.rawmk4 19_39.rawmk4 17_03.rawmk4 17_42.rawmk4 18_15.rawmk4 19_09.rawmk4 19_45.rawmk4 17_06.rawmk4 17_45.rawmk4 18_21.rawmk4 19_12.rawmk4 c18_06.rawmk4 17_09.rawmk4 17_48.rawmk4 18_48.rawmk4 19_15.rawmk4 c18_12.rawmk4 17_12.rawmk4 17_51.rawmk4 18_51.rawmk4 19_18.rawmk4 c18_18.rawmk4 17_15.rawmk4 17_54.rawmk4 18_54.rawmk4 19_21.rawmk4 c19_30.rawmk4 17_30.rawmk4 17_57.rawmk4 18_57.rawmk4 19_24.rawmk4 c19_36.rawmk4 17_33.rawmk4 18_00.rawmk4 19_00.rawmk4 19_27.rawmk4 c19_42.rawmk4 17_36.rawmk4 18_03.rawmk4 19_03.rawmk4 19_33.rawmk4