Description

Page : 274

Sondrestrom Lidar Operation Log

Operator(s) : E.Gudmundsson
Purpose : Routine data collection
Date(s) : 990426 - 990426
File(s) : L9904260 - L9904262
Comments : A late startup because of some cleaning problems. A nice first half of the run.
clear skies and counts ranging from ~1800-2000. Because of the late startup we
have background counts on the morning side (after 01:30 LT). The run is not
symetric around midnight. Noted background counts af a function of SZA.
Logfile : L9904260.log

Setup:0

Page : 275
[Variables]
Rayleigh Power=560mJ

[0]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=Off
Daystar=Out
Polerizer=Out
HalfWave Plates=Tracking
Filter Wheel=2:532(.5nm)

[1]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=Off
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Filter Wheel=2:532(.5nm)

Logsheet:0

Page : 276

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : E.Gudmundsson
Date(s) : 990426 - 990426
File(s) : L9904260 - L9904262

Files	Time [UT]	Comments	Cnt	S	Ope
L9904260	01:31:34	Start of experiment	1834	0	EG
L9904260	01:56:18	Rayleigh Convergence mirror adjusted	1615	0	EG
L9904260	02:36:32	Nice run, clear skies and nice counts	2117	0	EG
L9904260	03:10:28	Rayleigh Convergence mirror adjusted	1972	0	EG
L9904260	03:14:16	Rayleigh HG adjusted	1902	0	EG
L9904260	03:43:44	Overheat	264	0	EG
L9904261	04:10:43	Overheat	1870	0	EG
L9904261	04:38:30	Overheat	1463	0	EG
L9904261	04:40:01	Waiting for the laser to cool	50	0	EG
L9904261	04:42:41	Running again	1313	0	EG
L9904261	05:19:15	Paused changing setup	1928	1	EG
L9904261	05:20:14	Resumed with poarizer, incremented	1564	1	EG
L9904262	05:49:31	Background counts ~1 SZA =95.2	1727	1	EG
L9904262	05:57:06	Background counts ~2 SZA =94.8	1495	1	EG
L9904262	06:07:45	Background counts ~4 SZA=94.1	1507	1	EG
L9904262	06:16:35	Background counts ~8 SZA=93.6	1457	1	EG
L9904262	06:26:30	Background counts ~16 SZA=92.9	1469	1	EG
L9904262	06:36:54	Background counts ~32 SZA=92.2	1408	1	EG
L9904262	06:48:56	Background counts ~64 SZA=91.2	1430	1	EG
L9904262	07:01:59	Bakcgrounds counts~128 SZA=90.3	1452	1	EG
L9904262	07:06:31	End of experiment	1523	1	EG