Description

Page : 2067

Sondrestrom Lidar Operation Log

Operator(s) : Katelynn, Greer, Christian, Have, Pedersen, Christian Have Pedersen
Purpose : Routine Data Collection
Date(s) : 080806 - 080807
File(s) : L20080806_000 - L20080807_001
Comments : First 1.5 hours spent improving signals by converging. BigSky lasers were
converged and the mirror had to be moved significantly. The Daystar
was removed at near local midnight. Approximately 2 hours later I placed
attenuation in the BigSky TX beam path. I continued to take data until the solar
background deteriorated the SP signal.
Logfile : l0808070.log

Setup:0

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[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 : 2069

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Katelynn, Greer, Christian Have Pedersen
Date(s) : 080806 - 080807
File(s) : L20080806_000 - L20080807_000

Files	Time [UT]	Comments	Cnt	S	Ope
L20080806_000	23:26:18	Start of experiment		0	cp
		SP energy: 5350; Counts = 17176
		BigSky1=0.70; BigSky2=0.70
		Raman hv=0.750
	23:34:15	Something strange is happening w/ the HWP control		0	cp
		Restarting the DAQ
	23:44:12	Flipping routine on		0	cp
	00:19:57	Converging BigSky lasers (motors 5&6)		0	cp
	00:24:56	SP laser has been off while converging BigSky laser		0	cp
L20080806_002	00:26:01	SP laser ON		0	cp
	00:31:31	Trying to improve SP laser convergence		0	cp
L20080806_002	00:57:15	All the signals look much better now	34	0	cp
	01:33:52	Off-plane of polarization signal beginning to get through	41	0	cp
L20080806_002	01:43:41		36	0	cp
	02:34:03		43	0	cp
L20080807_000	03:12:03		44	0	cp
	03:32:40	Removing DayStar		0	cp
		and Raman 10 dB filter
	03:37:28	BigSky 1S signal is very strange		0	cp
L20080807_000	04:09:39		524	0	cp
	04:27:01		513	0	cp
	04:49:37	BigSky 2P signal also beginning to look strange		0	cp

Logsheet:1

Page : 2070

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Christian Have Pedersen
Date(s) : 080807 - 080807
File(s) : L20080807_001 - L20080807_001

Files	Time [UT]	Comments	Cnt	S	Ope
L20080807_001	05:36:56	Turning off lasers to move attunuation into BigSky TX		0	cp
		beam path on filter wheel
	05:45:27	The filter wheel is very poorly marked- I've put what I think		0	cp
		is 10 dB into the path of the BigSky Lavers
	05:54:37	1S and 2P signals still look curvy- not quite right, I am		0	cp
		going to try what I think is 20 dB attenuation
	05:59:32	Hmm, that did not really help. I will have to get some		0	cp
		further advice about this. Returning to 10 dB filter.
	06:06:57	Much better. I wonder if the beam is hitting is just a slightly		0	cp
		different place on the filter- I noticed several burns in it.
	06:24:44		17	0	cp
	07:08:04	I'm now concerned about the SP signal, the solar background	512	0	cp
		may getting too high again
	07:20:41	End of experiment		0	cp