Description

Page : 2142

Sondrestrom Lidar Operation Log

Operator(s) : Christian, Have, Pedersen, Christian Have Pedersen
Purpose : Daq. on 532nm, 607 and x-polarized 532nm.
Date(s) : 090210 - 090210
File(s) : L20090210_000 - L20090210_002
Comments :
Logfile : l0902100.log

Setup:0

Page : 2143
[Variables]
Rayleigh Power=

[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=On
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 : 2144

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Christian Have Pedersen
Date(s) : 090210 - 090210
File(s) : L20090210_000 - L20090210_001

Files	Time [UT]	Comments	Cnt	S	Ope
L20090210_000	03:26:02	Start of experiment	0	0	cp
L20090210_000	03:32:22	Chopper now lowered to 3-3.	201	0	cp
L20090210_000	03:32:53	Adjusted hatch on chopper to optimized low alt. masking.		0	cp
L20090210_000	03:33:21	Weird not seeing the profiles on news data display.		0	cp
L20090210_000	03:33:39	Running the RADAR as well.		0	cp
L20090210_000	03:34:49	Looks like a different profile this time		0	cp
L20090210_000	03:35:09	Hopefully the profiles will allow for a better temp.		0	cp
L20090210_000	03:35:33	fit at lower alt.		0	cp
L20090210_000	03:53:35	Do not like the curve on the profile at high alt.		0	cp
		That could be an indication of after pulsing.
		Will wait for approx. 10 mins. And then raise the chopper
		to 3-4.	201
L20090210_000	04:07:46	Will now raise the chopper a notch 3-3 to 3-4.	206	0	cp
L20090210_000	04:39:47	Looks like a large alt. difference when raising the chopper		0	cp
		from 3-3 to 3-4. Would like to have the chopper at the 3-3
		setting, but not sure how to handle the after pulsing ( Or at
		least what looks like afterpulsing). Maybe tweaking the 2. iris
		will limit the AP effect when chopper is set at 3-3 ?	203
L20090210_000	05:44:13	By the way, theres a full moon tonight.	206	0	cp
L20090210_001	06:04:31	counts	212	0	cp
L20090210_001	07:38:43	counts	219	0	cp
L20090210_001	07:39:33	Will now try and lower the chopper and adjust the iris.		0	cp
L20090210_001	07:44:16	Now the chopper is 3-3.	200	0	cp
L20090210_001	07:48:39	chopper now at 3-2	221	0	cp

Logsheet:1

Page : 2145

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Christian Have Pedersen
Date(s) : 090210 - 090210
File(s) : L20090210_001 - L20090210_002

Files	Time [UT]	Comments	Cnt	S	Ope
L20090210_001	07:49:52	Chopper at 3-2. 2. iris fully open (made no difference).		0	cp
		Adjusted chopper hatch to minimize low alt. noise,
		without degrading the high alt signal too much.
L20090210_001	07:51:21	Resulting profile looks better, but will need to get some	239	0	cp
		feedback on that.	239	0
L20090210_001	07:53:26	Looking at the profile over time it does not look like an improvement		0	cp
L20090210_001	08:28:40	counts	225	0	cp
L20090210_002	09:09:03	End of experiment		0	cp