Description

Page : 105

Sondrestrom Lidar Operation Log

Operator(s) : J.Geddes, E.Gudmundsson
Purpose : Routine data collection and Daystar adjustment
Date(s) : 980722 - 980723
File(s) : L9807223 - L9807228
Comments : The tuning of the Daystar filter (filter was rotated about axis perpendicular to
breadboard) did not seem to increase the counts, although definite decreases in
counts could be seen with the changing angle of tilt of the filter. The filter was
optimized as well as possible.

Background was too high during the night to allow for tuning of the sodium
system.
Logfile : L9807221.log

Setup:0

Page : 106
[Variables]
Dye Power=72mJ
Rayleigh Power=560mJ

[0]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=On
Daystar=In
Polerizer=In
HalfWave Plates=Tracking
Filter wheel=3:Open

[1]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Filter wheel=2:532/0.5nm

[2]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=Off
Daystar=In
Polerizer=In
HalfWave Plates=Tracking
Filter wheel=3:Open

Logsheet:0

Page : 107

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : J.Geddes, E.Gudmundsson
Date(s) : 980722 - 980723
File(s) : L9807223 - L9807224

Files	Time [UT]	Comments	Cnt	S	Ope
L9807223	22:52:21	Start of experiment		1
L9807223	22:10:51	Have been having trouble with dye system	754	0	J.G
L9807223	22:24:17	HG adjusted	953	0	J.G
L9807223	22:31:56	Dye PMT is probably saturated. Ignore dye data for now.	936	2	J.G
L9807223	22:36:59	HG adjusted	816	2	J.G
L9807223	22:43:17	HG adjusted	921	2	J.G
L9807223	22:54:11	Jet exhaust above	844	2	J.G
L9807223	23:06:59	Adjusting Daystar tilt		2	J.G
L9807223	23:12:35	Finished first Daystar adjustment	852	2	J.G
L9807223	23:14:42	Daystar tilt adjusted	573	2	J.G
L9807223	23:17:29	Daystar tilt adjusted	365	2	J.G
L9807223	23:19:56	Daystar tilt adjusted	890	2	J.G
L9807223	23:22:18	Daystar tilt adjusted	828	2	J.G
L9807223	23:24:02	Daystar tilt adjustments being made	833	2	J.G
L9807223	23:54:22	Thin clouds overhead. Daystar adjustments still in progress.		2	J.G
L9807223	00:05:24	Waiting for clouds to lift to continue Daystar adjustment.	795	2	J.G
L9807223	00:09:08	High voltage units swapped between Rayleigh and dye systems.	757	2	J.G
L9807223	00:10:11	Data collection paused.	757	2	J.G
L9807223	00:11:32	Data collection resumed.	686	2	J.G
L9807223	00:14:25	Data collection paused.		2	J.G
L9807223	00:16:08	Data collection resumed.	0	2	J.G
L9807223	00:20:39	Daystar tilt adjustments resumed	737	2	J.G
L9807224	00:40:35	Daystar tilt adjustments completed	691	2	J.G
L9807224	00:41:35	Dye system is now operating	698	0	J.G

Logsheet:1

Page : 108

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : J.Geddes, E.Gudmundsson
Date(s) : 980723 - 980723
File(s) : L9807224 - L9807228

Files	Time [UT]	Comments	Cnt	S	Ope
L9807224	00:46:13	Sodium system on running aon a borrowed HV supply		0	EG
		(Redundancy can be a good thing sometimes)		0	EG
L9807224	00:54:57	Daystar filter removed. .5nm 532nm filter put in its place.	752	1	J.G
L9807224	01:16:35	An NLC has shown up at 83km on the integrated profile.	2835	1	J.G
		Its equivalent Rayleigh altitude is roughly 60km.
L9807224	01:33:11	Light cirrus clouds overhead.	2505	1	J.G
L9807227	05:56:11	File number incremented	3075	1	J.G
L9807227	06:01:02	Computer has recorded a "slow or missing triggers" warning	3034	1	J.G
L9807227	06:18:39	Possibly a weak NLC at about 80 km.	3319	1	J.G
L9807227	06:19:26	Daystar filter reinstalled, 532nm filter removed	3289	1	J.G
L9807227	08:05:25	File number incremented.	814	1	J.G
L9807228	08:35:51	Possible NLC in integrated profile at 83km.	865	1	J.G
L9807228	09:05:59	End of experiment	901	1	J.G