Description

Page : 2071

Sondrestrom Lidar Operation Log

Operator(s) : Katelynn, Greer, Katelynn Greer
Purpose : Routine Data Collection and Demonstration of new background rejection system/optics
Date(s) : 080808 - 080808
File(s) : L20080808_002 - L20080808_004
Comments : I began the evening with an attempt at the demonstration of the new background
rejection system, but I'm not sure how sucessful it was. I may have to try it again.
After that was routine data collection. Sky conditions were good.
Logfile : l0808080.log

Setup:0

Page : 2072
[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=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0

Page : 2073

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Katelynn Greer
Date(s) : 080808 - 080808
File(s) : L20080808_002 - L20080808_002

Files	Time [UT]	Comments	S	Ope
L20080808_002	00:53:15	Start of experiment	0	KRG
		SP Energy 5250 mJ; Counts = 18887
		BigSky1=0.70; BigSky2=0.70
		Raman PMT is off
		I had to remove the filter wheel from BigSky beam path
		because of reflection problems
	00:54:03	Signal induced noise on Rayleigh channel; I am adding	0	KRG
		10 dB attenuation in front of chopper
	01:02:21	Hmm, that is not right either	0	KRG
	01:05:22	BigSky Lasers off	0	KRG
		10 dB attenuation removed
	01:09:56	OK, I will run Matt Hayman's solar background demonstration	0	KRG
		in this configuration
	01:14:21	Tuning ON BigSky lasers, RX cabinet is currently open	0	KRG
	01:15:47	Adjusting RX HWP to minimize background	0	KRG
	01:22:00	Background minimized, pos=64 az=-30.48	0	KRG
	01:27:02	Cabinet closed, begin Period 1	0	KRG
	01:32:26	Removing Compensator	0	KRG
		Turning ON Raman PMT
	01:39:39	Background mimized at pos=45 az = -26.28	0	KRG
		Beginning Period 2
	01:45:56	Removing Glen-Thompson Polarizer	0	KRG
	01:48:58	Cabinet closed; Begin Period 3	0	KRG

Logsheet:1

Page : 2074

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Katelynn Greer
Date(s) : 080808 - 080808
File(s) : L20080808_003 - L20080808_004

Files	Time [UT]	Comments	Cnt	S	Ope
	01:52:50	There is a strange bump on the 1S and 2P profiles at about		0	KRG
		23km
	01:56:28	End Period 3		0	KRG
		Turning OFF all lasers and putting compensator and
		Glenn-Thompson Polarizer back into RX path
		Exiting ARCLITE2 software to reset RX HWP offset
	02:05:55	All lasers on and starting Routine Data collection		0	KRG
	02:05:54	Raman PMT hv = 0.675		0	KRG
	02:09:55	Strange spike on rollover of SP signal	518	0	KRG
	02:10:17	Initiating flipping routine		0	KRG
	02:22:58	Strange spike is persisting on 2P channel, perhaps is		0	KRG
		it some kind of PSC at 22 km
	02:44:42		485	0	KRG
	02:55:03	Adding 10 dB attuation on filter wheel to BigSky TX		0	KRG
	02:59:56	1S improved but still not very 'peaky'	532	0	KRG
	03:23:36	NLC detection ?	464	0	KRG
	03:33:06	No, I don't think there is anything there	471	0	KRG
L20080808_003	04:03:33		463	0	KRG
L20080808_003	04:34:28		469	0	KRG
L20080808_004	04:54:48		466	0	KRG
	05:33:48		463	0	KRG
	06:14:05		460	0	KRG
L20080808_004	07:23:46		454	0	KRG
L20080808_004	07:34:22	End of experiment		0	KRG