Description

Page : 1870

Sondrestrom Lidar Operation Log

Operator(s) : Christian Have Pedersen
Purpose : Testing and data acquisition
Date(s) : 071117 - 071117
File(s) :
Comments : Work on aligning the frontend tube + frontend with the secondary and primary
mirror has been carried out. The result is an improved Rayleigh profile at up to 75
km alt.
The low alt. spike has returned!
Logfile : L0711170.log

Setup:0

Page : 1871
[Variables]
Rayleigh Power=510mJ

[0]
front end Iris=1.5mm
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 : 1872

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : Christian Have Pedersen
Date(s) : 071117 - 071117
File(s) :

Files	Time [UT]	Comments	Cnt	S	Ope
20071113_001	03:09:14	Start of experiment	0	0	cp
20071117_000	03:30:15	Tweaking after work with frontend tube alignment	0	0	cp
		Still not good and the low alt. spike is back !!!	0
20071117_000	03:39:31	The work on aligning the frontend tube definitely	0	0	cp
		helped pushing up the profile about 10-15 km	0
20071117_000	04:31:41	Maybe I have found the algoritme for reducing the low		0	cp
		alt. spike.
20071117_000	05:05:52	No I have not. Blast...Lots of tweaking, but it always ends up		0	cp
		with the same result.
20071117_000	05:06:32			0	cp
20071117_001	06:22:25	Been tweaking alot, will now leave the setup as it is for 2hrs.	0	0	cp
20071117_001	06:27:19	Clouds.		0	cp
20071117_001	07:13:39	Cannot see the clouds, so it is probably haze. Will try and		0	cp
		see if it goes away.
20071117_001	07:58:27	End of experiment		0	cp