Description

Page : 123

Sondrestrom Lidar Operation Log

Operator(s) : J.Geddes
Purpose : Routine data collection
Date(s) : 980810 - 980811
File(s) : L9808101 - L9808104
Comments : At the end of the run, the polarizer was removed for about 4 profiles to ascertain
whether the half wave plate offsets were optimal. Adjusting the dye convergence
mirror showed that there was indeed a haze layer over the sight.
Logfile : l9808100.log

Setup:0

Page : 124
[Variables]
Dye Power=51 mJ
Rayleigh Power=570 mJ

[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(.5nm)

[2]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=Out
HalfWave Plates=Tracking
Filter Wheel=2:532(.5nm)

Logsheet:0

Page : 125

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : J.Geddes
Date(s) : 980810 - 980811
File(s) : L9808101 - L9808104

Files	Time [UT]	Comments	Cnt	S	Ope
L9808101	23:26:49	Start of experiment.	474	0	JG
L9808101	23:30:59	Rayleigh convergence mirror adjusted	544	0	JG
L9808101	23:49:51	Dye tuning adjusted.		1	JG
L9808101	23:49:53	Rayleigh HG adjusted.	490	0	JG
L9808101	23:52:32	Setup change.	460	1	JG
L9808101	00:04:10	Dye system tuned.	2561	1	JG
L9808101	00:16:51	Dye system tuned.	2492	1	JG
L9808101	00:19:58	Dye system tuned.	2427	1	JG
L9808101	00:23:06	Dye system tuned.	2287	1	JG
L9808101	00:26:02	Dye system tuned.	2343	1	JG
L9808101	00:28:53	Dye system tuned.	2253	1	JG
L9808101	00:32:50	Dye PMT voltage dropped to 1750 V.	2265	1	JG
L9808101	00:34:45	Dye PMT voltage increased to 1950 V.	2344	1	JG
L9808101	00:35:37	Dye convergence mirror adjusted.	2344	1	JG
L9808101	00:46:37	Dye convergence mirror adjusted.	2343	1	JG
L9808101	01:23:14	Dye system tuned.	2280	1	JG
L9808101	01:41:37	Sporadic Na layer observed in top portion of main Na layer.	2375	1	JG
L9808101	01:50:29	Radar has been observing a low altitude aurora or a LACE.	2352	1	JG
L9808103	05:26:55	Clouds are setting in.	2255	1	JG
L9808103	05:33:26	Cloud visible in Na beam.	1550	1	JG
L9808104	07:13:05	Polarizer replaced with glass window.	2666	2	JG
L9808104	07:19:55	End of experiment.	5219	2	JG