Content-Length: 6638 | pFad | https://download.hao.ucar.edu/d5/mlso/log/observer/1998/mlso.1998d273.olog

----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Wed Sep 30 17:02:32 GMT 1998 Year: 98 Doy: 273 Observer: koon WEATHER COMMENT: Wed Sep 30 17:02:34 GMT 1998 Clear sky, wind=5 mph from the South, temp=50 F. **MKIII PROBLEM**: Wed Sep 30 17:03:13 GMT 1998 VCP screen didn't turn on as it should have, rebooted the KCC to fix. Wed Sep 30 17:05:40 GMT 1998 CHIP Startup--Initializing new tape Wed Sep 30 17:10:22 GMT 1998 MKIII Start Patrol Wed Sep 30 17:10:45 GMT 1998 PICS Start Patrol Wed Sep 30 17:10:45 GMT 1998 PICS Start Patrol Wed Sep 30 18:01:55 GMT 1998 CHIP Bias Wed Sep 30 18:02:35 GMT 1998 PICS Flat Wed Sep 30 18:02:55 GMT 1998 CHIP End Bias Wed Sep 30 18:03:07 GMT 1998 CHIP Water Wed Sep 30 18:03:50 GMT 1998 CHIP End Water Wed Sep 30 18:03:50 GMT 1998 CHIP End Water **CHIP PROBLEM**: Wed Sep 30 18:41:51 GMT 1998 Animation sequence images from yesterday and this morning look strange. CHIP Filter Temp was 35.381 at 1830 and is 35.281 right now, will monitor for oscillation. All connections to the controller on the spar look good, and the cooling unit is functioning properly. Wed Sep 30 19:01:58 GMT 1998 CHIP Bias Wed Sep 30 19:02:39 GMT 1998 PICS Flat Wed Sep 30 19:03:01 GMT 1998 CHIP End Bias Wed Sep 30 19:03:15 GMT 1998 CHIP Water Wed Sep 30 19:04:12 GMT 1998 PICS End Flat Wed Sep 30 19:04:00 GMT 1998 CHIP End Water **PSPT PROBLEM**: Wed Sep 30 19:21:30 GMT 1998 The mirror is oscillating again. I pulled off the side cover earlier to look at the optics when there was no oscillation, it looks the same now. Light beams aren't centered on the quad-cell lens or the beam splitter or the baffle tube leading into the secondary optics package, but I think they are close enough for everything to work as designed. The light spill on the side of the baffle looks like a secondary reflection from the SOP to the beam-splitter and then back towards the SOP but hitting the baffle, so it probably isn't a problem. I noticed that the entire instrument is shuddering slightly for 2-4 cycles every now and then, the period between the shudder sequences may be matching the period between the mirror oscillations as seen when the meter needles swing back and forth. Wed Sep 30 20:01:51 GMT 1998 CHIP Gain Wed Sep 30 20:02:43 GMT 1998 PICS Flat Wed Sep 30 20:04:09 GMT 1998 PICS End Flat Wed Sep 30 20:06:30 GMT 1998 CHIP End Gain Wed Sep 30 20:06:41 GMT 1998 CHIP Bias Wed Sep 30 20:07:35 GMT 1998 CHIP End Bias Wed Sep 30 20:07:48 GMT 1998 CHIP Water Wed Sep 30 20:08:25 GMT 1998 CHIP End Water **PSPT PROBLEM**: Wed Sep 30 20:14:03 GMT 1998 It looks like the shudder only happens when the mirror servo loop is active, when the green led is on. I blocked the light to the quad cell and the shudders eventually stopped, but the telescope lost guiding and I had to exit and do a Restart. Wed Sep 30 21:02:38 GMT 1998 PICS Flat Wed Sep 30 21:02:55 GMT 1998 CHIP Bias Wed Sep 30 21:03:56 GMT 1998 CHIP End Bias Wed Sep 30 21:03:56 GMT 1998 CHIP End Bias Wed Sep 30 21:04:09 GMT 1998 CHIP Water Wed Sep 30 21:04:52 GMT 1998 CHIP End Water **CHIP PROBLEM**: Wed Sep 30 21:19:27 GMT 1998 Filter temp is still out of range on the high side. Right now the temp is 35.122 and the DC ouput from the controller on the spar varies between 7 to 9 vdc. At 1830 temp was 35.381, at 1840 = 35.284, at 1900 = 35.263, at 1930 = 35.242, at 1955 = 35.190, at 2020 = 35.172, at 2044 = 35.126, and at 2115 = 35.122 I've been working on the PSPT all day so I haven't been able to check out this problem any further. Wed Sep 30 22:02:39 GMT 1998 PICS Flat Wed Sep 30 22:03:00 GMT 1998 CHIP Bias Wed Sep 30 22:04:05 GMT 1998 PICS End Flat Wed Sep 30 22:04:05 GMT 1998 CHIP End Bias Wed Sep 30 22:04:19 GMT 1998 CHIP Water Wed Sep 30 22:05:06 GMT 1998 CHIP End Water **PSPT PROBLEM**: Wed Sep 30 22:08:07 GMT 1998 Since it looks like the mirror oscillation problem is just a symptom of a telescope drive problem I opened the RA drive trans case and adjusted the meshing of the gears. I thought if the gears were binding or too loosely meshed there could be drive oscillation problems. The oscillation problem still exists, but with the trans open I can see that the motor is driving the gears back and forth. T 1998 CHIP CHIP End Patrol Wed Sep 30 22:53:39 GMT 1998 PICS End Patrol **PSPT PROBLEM**: Wed Sep 30 23:02:57 GMT 1998 I talked to Haosheng, the mirror driver board is still being suspected of causing the mirror to drive too far. I will change the software gain, decreasing it by a factor of two, we'll see what happens after this. Wed Sep 30 23:05:44 GMT 1998 CHIP ending tape **PSPT PROBLEM**: Wed Sep 30 23:10:05 GMT 1998 OK, I changed the software mirror gain values from -20 to -10 in pspt_sys.h COMMENT: Wed Sep 30 23:26:13 GMT 1998 TAPES: ****** PICS: P01308 CHIP: C00705 LOWL: L00545 in drive #1 Wed Sep 30 23:27:32 GMT 1998 MkIII 17_10.rawmk3 18_14.rawmk3 19_28.rawmk3 20_33.rawmk3 21_37.rawmk3 17_13.rawmk3 18_17.rawmk3 19_31.rawmk3 20_36.rawmk3 21_40.rawmk3 17_16.rawmk3 18_20.rawmk3 19_34.rawmk3 20_39.rawmk3 21_43.rawmk3 17_19.rawmk3 18_23.rawmk3 19_37.rawmk3 20_42.rawmk3 21_46.rawmk3 17_22.rawmk3 18_26.rawmk3 19_40.rawmk3 20_44.rawmk3 21_49.rawmk3 17_25.rawmk3 18_29.rawmk3 19_43.rawmk3 20_47.rawmk3 21_52.rawmk3 17_28.rawmk3 18_32.rawmk3 19_46.rawmk3 20_50.rawmk3 21_55.rawmk3 17_31.rawmk3 18_35.rawmk3 19_49.rawmk3 20_53.rawmk3 21_57.rawmk3 17_33.rawmk3 18_38.rawmk3 19_52.rawmk3 20_56.rawmk3 22_00.rawmk3 17_36.rawmk3 18_41.rawmk3 19_55.rawmk3 20_59.rawmk3 22_03.rawmk3 17_39.rawmk3 18_47.rawmk3 19_58.rawmk3 21_02.rawmk3 22_06.rawmk3 17_42.rawmk3 18_53.rawmk3 20_01.rawmk3 21_05.rawmk3 22_09.rawmk3 17_45.rawmk3 18_59.rawmk3 20_04.rawmk3 21_08.rawmk3 22_12.rawmk3 17_48.rawmk3 19_02.rawmk3 20_06.rawmk3 21_11.rawmk3 22_15.rawmk3 17_51.rawmk3 19_05.rawmk3 20_09.rawmk3 21_14.rawmk3 22_18.rawmk3 17_54.rawmk3 19_08.rawmk3 20_12.rawmk3 21_17.rawmk3 22_21.rawmk3 17_57.rawmk3 19_11.rawmk3 20_15.rawmk3 21_20.rawmk3 22_24.rawmk3 18_00.rawmk3 19_14.rawmk3 20_18.rawmk3 21_22.rawmk3 c18_44.rawmk3 18_03.rawmk3 19_17.rawmk3 20_21.rawmk3 21_25.rawmk3 c18_50.rawmk3 18_06.rawmk3 19_20.rawmk3 20_24.rawmk3 21_28.rawmk3 c18_56.rawmk3 18_09.rawmk3 19_23.rawmk3 20_27.rawmk3 21_31.rawmk3 18_12.rawmk3 19_25.rawmk3 20_30.rawmk3 21_34.rawmk3

pFad - (p)hone/(F)rame/(a)nonymizer/(d)eclutterfier! Saves Data!