Description


Page : 629

Sondrestrom Lidar Operation Log


Operator(s) : Keith, Soldavin, E.Guðmundsson, K.Richmond, Keith, Soldavin, J.Jørgensen
Purpose : NLC hunt
Date(s) : 000809 - 000810
File(s) : L8091 - L8102
Comments :
Logfile : l0008090.log

Setup:0


Page : 630
[Variables]
Rayleigh Power=520mJ
Dye Power=95mJ

[0]
Iris=min_opening
Rayleigh System=On
Dye System=On
Daystar=In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=out

[1]
Iris=min_opening
Rayleigh System=On
Dye System=Off
Daystar=In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

Logsheet:0


Page : 631

Sondrestrom Lidar Operation Log


Log Sheet 1 of 3
Operators : Keith, Soldavin, E.Guðmundsson, K.Richmond
Date(s) : 000809 - 000810
File(s) : L8091 - L8093
FilesTime [UT]CommentsCntSOpe
L809118:37:17Start of experiment4900KAS
L809121:49:34Sodium Convergence mirror adjusted2570EG
L809121:51:20Rayleigh Convergence mirror adjusted2750EG
L809122:18:13incremented3150EG
L809222:39:45Opened the receiver to tweek daystar2810EG
L809223:13:20Starting to tweek the daystar4670EG
L809223:58:17Done tweeking, incremented0EG
L809323:59:56Counts9810EG
L809300:06:02Sodium Convergence mirror adjusted and15610KR
Dye system tuned to 589.158 nm
L809300:20:43Na layer is split in twain.16430KR
L809301:03:33Wacko sporadic Na! (and I do mean wacko)18900KR
L809301:13:44thin layer coincident with sporadic E on ISR.18520KR
L809301:19:49Second thin layer moving in above as well.19050KR
L809301:33:08Yet another thin layer coming in up high -- 110 km, other18560KR
two are kind of merging.
L809301:45:04Saw super-thin ?layer at 88 km for 2 integrations -- something19340KR
less protuding is still hanging around there.
L809302:22:36Sodium Convergence mirror adjusted18660KR
L809302:22:43I believe drop in Na counts is due to beam vignetting in the18590KR
chimney - laser table is surfin' a wave in the floor, I'll quickly
check power to confirm this.
L809302:29:22Dye power = 95 mJ still. Impossible to converge better than17900KR
this, and it looks to me like ~30% of the beam is hitting the

Logsheet:1


Page : 632

Sondrestrom Lidar Operation Log


Log Sheet 2 of 3
Operators : K.Richmond, Keith, Soldavin, J.Jørgensen
Date(s) : 000810 - 000810
File(s) : L8093 - L8101
FilesTime [UT]CommentsCntSOpe
side of the chimney. I don't know why such a movement
wouldn't throw the convergence off more though...
L809303:00:51Tried taking off panel in Na room ceiling to see if it is 17220KR
possible to easily move top of chimney. Answer is no.
L809403:17:44Incremented file 17080KR
L809403:19:17Still seeing a sporadic Na.16630KR
L809403:58:13I bet the output window is fogging up will remove it.15390KR
L809404:05:24Output window fogging up was killing us, beam vignetting14460KR
present, but not that bad. Running without window for now,
until it de-fogs. Convergence adjusted, Na laser tuned.
L809404:16:10Sodium Convergence mirror adjusted14880KR
L809404:37:59Replaced Na window. We'll see if it fogs up again...15160KR
L809404:40:38Sodium Convergence mirror adjusted14640KR
L809405:02:11Sodium Convergence mirror adjusted15160KR
L809405:37:45Sodium Convergence mirror adjusted and15820KR
Dye system tuned to 589.158 nm
L809411:39:05Was going to stop the sodium laser but realized I would have17610JJ
to stop and rewire the SR430 trigger, going to leave it
running for now
L809412:15:39Tried lowing the chopper blanking for the sodium channel0JJ
trying to see if I convert better. NOT A CHANCE
L809414:57:40Clouds moving in10980JJ
L810115:10:16Incremented filenumber14270KR
L810115:15:41Sodium system turned off1JJ

Logsheet:2


Page : 633

Sondrestrom Lidar Operation Log


Log Sheet 3 of 3
Operators : J.Jørgensen, K.Richmond, E.Guðmundsson
Date(s) : 000810 - 000810
File(s) : L8102 - L8102
FilesTime [UT]CommentsCntSOpe
L810215:41:29Incremented filenumber9351KR
L810216:02:42Perhaps an NLC? Clouds are getting in the way...9141KR
L810217:42:20Intermittent clouds16141EG
L810218:46:44heavy clouds for the moment10781EG
L810219:42:56There is no hope in sight for it clearing up. sutting down5591EG
L810219:44:02End of experiment1EG