Description


Page : 892

Sondrestrom Lidar Operation Log


Operator(s) : E.Guðmundsson, J.Thayer
Purpose : NLC observation
Date(s) : 010806 - 010807
File(s) : L108060 - L108070
Comments :
Logfile : l0108060.log

Setup:0


Page : 893
[Variables]
Rayleigh Power=520mJ

[0]
Iris=0.6mm
Rayleigh System=On
Dye System=Off
Etalon=Out
Daystar=In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

[1]
Iris=0.6mm
Rayleigh System=On
Dye System=Off
Etalon=Out
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 894

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators : E.Guðmundsson, J.Thayer
Date(s) : 010806 - 010807
File(s) : L108060 - L108070
FilesTime [UT]CommentsCntSOpe
L10806014:25:45Start of experiment23230EG
L10806014:34:59Rayleigh Convergence mirror adjusted24760EG
L10806018:53:31past hour SR430 froze - restarted SR43024220EG
L10806019:18:47System pausd to change BNC plug24430EG
L10806019:25:14Resumed24170EG
L10806020:55:27Incremented22510EG
L10806121:34:51System paused for dinner23410EG
L10806123:45:52Dinner is over - ahhh back on the air sza=87.125760EG
L10806100:05:25counts21750JT
L10806100:41:24counts20340JT
L10806100:43:57Daystar out of path, sza=91.095931JT
L10806100:54:14Rayleigh Convergence mirror adjusted93801JT
L10806100:55:45High cirrus affecting signal and probably background79341JT
L10806101:32:34Signal improvin cirrus is gone95231JT
L10806102:05:26skies are still abit hazy -weak NLC seen on 10-minute record87901JT
L10806102:16:29Definite NLC detected at altiude of 87 km!86621JT
L10806102:31:36NLC is weak with equiv Ray = 75 km, sza=95.976341JT
L10806103:46:59NLC still there with stronger return , low cirrus reducing signal50671JT
L10806104:04:54Changed chopper delay from 3446 to 3416 microsecs51711JT
L10806104:05:28The background signal in the 10-minute channel was curving50310JT
L10807004:20:05NLC weakened but now returning74041JT
L10807004:42:0376691JT
L10807005:27:15NLC has faded78791JT
L10807006:17:36Daystar in place, sza = 91.116070JT

Logsheet:1


Page : 895

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : J.Thayer
Date(s) : 010807 - 010807
File(s) : L108070 - L108070
FilesTime [UT]CommentsCntSOpe
L10807007:06:06counts17730JT
L10807008:02:31weak NLC for last 30 minutes17270JT
L10807008:14:55NLC has faded17860JT
L10807008:15:52End of experiment17860JT