Description

Page : 765

Sondrestrom Lidar Operation Log

Operator(s) : E.Guðmundsson, J.Jørgensen
Purpose : Routine data collection-Stratalert
Date(s) : 010216 - 010217
File(s) : L102160 - L102170
Comments : Note. the reciever has changes since the last run. The Al mirror is back in the
sodium Rx channel and the Rayleigh Rx mirror mount has changed as well. Some
alignment was done on the rayleigh channel.

The alignment of the Rayleigh channel seems to have been a succes. We are
getting full counts at 30 km with the iris at minimum.

Logfile : l0102160.log

Setup:0

Page : 766
[Variables]
Dye Power=61mJ
Rayleigh Power=500mJ

[0]
Iris=min_opening
Rayleigh System=On
Dye System=On
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

Logsheet:0

Page : 767

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : E.Guðmundsson
Date(s) : 010216 - 010217
File(s) : L102160 - L102160

Files	Time [UT]	Comments	Cnt	S	Ope
L102160	21:42:57	Start of experiment	9258	0	EG
L102160	22:09:09	Rayleigh Convergence mirror adjusted	8266	0	EG
L102160	22:10:13	As the Al mirror is back in the sodium receiver channel		0	EG
		The signal strength is to high at low altitude causing signal
		induced noise. Have to push up the chopper open altitude.
L102160	22:11:59	The sodium delay is now at 3965usec and the fully open		0	EG
		altitude on that setting is arround 12km judging from the
		raw counts.
L102160	22:15:57	Pushing the chopper altitude up by 3km (20usec) D=3945us	10485	0	EG
L102160	22:34:12	Pushing 3km more upwards (20usec) D=3925us	10430	0	EG
L102160	22:44:04	Sodium Convergence mirror adjusted	10326	0	EG
L102160	22:59:26	Tuning for maximum sodium	10157	0	EG
L102160	23:35:12	This has taken to long, to much to do on the radar front.		0	EG
		Anyways, maximum sodium obsesrved at 589.156nm
L102160	23:46:12	Flipping the dye laser HWP to 100deg	10071	0	EG
L102160	23:48:21	done flipping	10074	0	EG
L102160	23:56:44	HWP=102.5		0	EG
L102160	23:59:10	HWP at 105deg	10282	0	EG
L102160	00:01:55	HWP at 110deg	10299	0	EG
L102160	00:03:34	HWP at 115deg		0	EG
L102160	00:06:49	HWP at 120deg		0	EG
L102160	00:10:09	HWP at 125deg	10156	0	EG
L102160	00:11:56	HWP at 130deg		0	EG
L102160	00:13:44	HWP at 1135		0	EG

Logsheet:1

Page : 768

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : E.Guðmundsson, J.Jørgensen
Date(s) : 010217 - 010217
File(s) : L102160 - L102170

Files	Time [UT]	Comments	Cnt	S	Ope
L102160		HWP at 140 deg
L102160	00:53:45	HWP back to 100deg	10245	0	EG
		Note things started drifting when I kept opening the door	10245
		every minute. Dye wavelength dropped down to 589.154nm	10280
		and I think I saw a step in the temperature too! Will have
		to verify in looking at the wevelength log fro the run.
L102160	00:56:11	Tuning in steps back to 589.156nm to get back to maximum	10216	0	EG
		sodium counts
L102160	01:24:54	there is some haze in the beam now, incremented	7912	0	EG
L102170	01:26:13	counts	8059	0	EG
L102170	02:00:12	clouds are getting thicker	3616	0	EG
L102170	03:12:40	A little haze for a while, now clear again	9028	0	JJ
L102170	03:55:41	Hazy again		0	JJ
L102170	04:35:35	More haze	4294	0	JJ
L102170	04:45:34	Clearing again	8392	0	JJ
L102170	05:27:37	End of experiment		0	JJ