Description

Page : 1960

Sondrestrom Lidar Operation Log

Operator(s) : Katelynn Greer Matt Hayman
Purpose : Adjust Daystar, TX and RX 1/2 waveplates, and record Rayliegh data
Date(s) : 080517 - 080517
File(s) : L20080517_002 - L20080517_003
Comments : Due to low altitude clouds, could not test Daystar or polarization. Did work on
signals and tried Raman on the Hamamatsu tube
Logfile : l0805170.log

Setup:0

Page : 1961
[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=Off
Sodium Field stop=0.5mm
Etalon=Out
Daystar=4A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0

Page : 1962

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Katelynn Greer Matt Hayman
Date(s) : 080517 - 080517
File(s) : L20080517_002 - L20080517_003

Files	Time [UT]	Comments	S
	00:22:06	Start of experiment	0
	00:38:23	Adjusting RX 1/2 waveplate to minimize background	0
	02:26:47	Having Problems acquiring Data	0
	02:27:08	Switching to BigSky Laser1, trying to converge	0
L20080517_002	02:31:45		0
	02:58:09	BigSky Laser 1 Converged- thick cirrus cloud in signal	0
		Tuning on HP Rayliegh, trying to converge
L20080517_002	03:07:54	running rayleigh only expreimet will switch to Raysp60	0

L20080517_002	03:28:36	new program installed - worked on converging but clouds	0
		overhead
L20080517_003	04:14:56	Rayleigh background has a positive slope	0
		might be due to cloud returns on Big Sky laser
		turning off Big Sky laser
L20080517_003	04:24:38	still sloping background - lets try to put cover on	0

	04:27:51	put cover on - might have taken care of it	0

L20080517_003	04:37:39	strange dip above Rayleigh profile - turning off Rayleigh laser	0

L20080517_003	04:54:46	DIp caused by iris wide open. closed down first and second	0
		iris - second iris 6mm seems a bit large need to raise chopper
	04:56:26		0

Logsheet:1

Page : 1963

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : J Thayer, M Hayman, K Greer
Date(s) : 080517 - 080517
File(s) : L20080517_003 - L20080517_003

Files	Time [UT]	Comments	S
L20080517_003	05:10:45	Raman channel online HV=.760 using Hamamatsu tube	0
	05:13:35	Raman signal looksreasonable given the clouds	0
	05:15:37	Big Sky laser is on but it is saturating the detector due to	0
		clouds - clearly SIN in Big Sky laser

	05:22:37	Rayleigh channel still has strange dip but could be due to	0
		clouds saturating the signal

	05:24:21	Reduced Raman HV to 0.7	0

L20080517_003	05:25:19	End of experiment	0