Description

Page : 383

Sondrestrom Lidar Operation Log

Operator(s) : E.Gudmundsson
Purpose : Routine data collection
Date(s) : 991011 - 991012
File(s) : L9910110 - L9910121
Comments : Sodium beem expender out
Logfile : L9910110.log

Setup:0

Page : 384
[Variables]
Dye Power=65mJ
Rayleigh Power=540mJ

[0]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=Out
HalfWave Plates=Tracking
Filter Wheel=2:532(.5nm)

Logsheet:0

Page : 385

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : E.Gudmundsson
Date(s) : 991011 - 991012
File(s) : L9910110 - L9910120

Files	Time [UT]	Comments	Cnt	S	Ope
L9910110	23:18:30	Start of experiment	1866	0	EG
L9910110	23:20:42	Rayleigh Convergence mirror adjusted	3982	0	EG
L9910110	23:44:49	Dye system tuned to 589.017 nm on computer		0	EG
L9910110	23:45:07	looks like a sporadic sodium layer		0	EG
L9910110	23:47:15	Dye system tuned to 589018. nm on computer		0	EG
L9910110	23:48:31	the forementioned sporadic is probably just a sharp peek		0	EG
L9910110	23:55:55	looks like there is another small peek on its own just above	4523	0	EG
		100km
L9910110	23:57:25	The sum of sodium on Johns display has been growing steadily		0	EG
		since startup. I have not tweeked the system in any way
		since 23:47
L9910110	00:23:27	Rayleigh HG adjusted	3707	0	EG
L9910110	00:46:43	Sodium peek rather flat (over ~7km) and the Rayleigh eq.	5547	0	EG
		is 30km
L9910110	01:02:43	!! There is a small sporadic layer at 100km	5703	0	EG
L9910110	01:37:47	looks like that sporadic thing is gone and the sodium layer	5613	0	EG
		is depleating somewhat (sum of sodium/sum of 25-30rayl
		is going down).
L9910111	02:06:59	The sodium layer has lost some weight beginning at 1:30UT		0	EG
		it looks thinner in altitude, the peek count value is similar
		as before or rayl. eq to ~30km. It took only 10-15min
		to deplete to the current (stable) level. I'm tempted to
		tweek the convergence soon ! Naa, I did not fall into tempt..
L9910120	03:30:11	The continuum pumping laser was down with the shutter off		0	EG

Logsheet:1

Page : 386

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : E.Gudmundsson
Date(s) : 991012 - 991012
File(s) : L9910120 - L9910121

Files	Time [UT]	Comments	Cnt	S	Ope
L9910120	03:31:35	This was at 02:18, it only now that I'm recovering	4916	0	EG
L9910120	03:37:24	Reconverged sodium	4657	0	EG
L9910120	03:41:00	Rayleigh HG adjusted		0	EG
L9910120	03:50:02	Rayleigh Convergence mirror adjusted		0	EG
L9910120	04:08:05	The sodium profile looks like that mountain in Steven		0	EG
		Spielbergs Close encounters of the third kind.
L9910120	05:20:31	looks like the sodium layer is gaining weight again		0	EG
L9910121	06:23:55	The radar was shut down at 06:00:06	6033	0	EG
L9910121	07:17:51	End of experiment	5985	0	EG