Description


Page : 1520

Sondrestrom Lidar Operation Log


Operator(s) : Nathan, Eldridge, Claus, Johannsen, E.Guðmundsson
Purpose : Normal data aq.
Date(s) : 040812 - 040813
File(s) : L20040812_000 - L20040813_001
Comments :
Logfile : l0408120.log

Setup:0


Page : 1521
[Variables]
Dye Power=50mJ
Rayleigh Power=425mJ

[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=1.5mm
Rayleigh path attenuation=0dB
Dye System=On
Sodium Field stop=1.5mm
Etalon=Out
Daystar=8A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1522

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators : Claus, Johannsen, Nathan, Eldridge, , E.Guðmundsson
Date(s) : 040812 - 040813
File(s) : L20040812_000 - L20040813_000
FilesTime [UT]CommentsCntSOpe
L20040812_00013:36:18Start of experiment1040CJ
L20040812_00013:43:37counts950CJ
L20040812_00013:50:33Possible NLC 1020CJ
L20040812_00014:46:47counts950CJ
L20040812_00219:04:57counts960CJ
L20040812_00322:50:32Counts770EG
L20040812_00322:55:59I don't like the the looks of the sodium return - there800EG
might be a problem with the laser again.
L20040812_00423:49:08The previous statement about an NLC was wrong0EG
L20040812_00423:57:04time to take the daystar out of the path, pausing840EG
L20040812_00423:58:59Resuming with daystar out0EG
L20040813_00002:31:52Taking a look at the sodium system - data may be currpt0EG
L20040813_00002:41:16Pushed the chopper up a bit4940EG
L20040813_00002:41:40Signs of NLC fairly high upat 85km4940EG
L20040813_00002:47:06YEBS, NLC forming for sure5180EG
L20040813_00003:51:52NLC still present and still at 85km, 0EG
L20040813_00003:52:17some low altitude clouds seem to be moving in, I hope they4400EG
stey the away for a while yet.
L20040813_00004:11:21Cirrus knocking the signal down! %$#!%3430EG
L20040813_00004:27:00NLC getting strong now , 65km Reyleigh eq0EG
L20040813_00004:29:18Started flipping plates4590EG
L20040813_00004:30:12Off stae cont, modified plate pos 1180EG
L20040813_00004:30:59ON4660EG
L20040813_00004:33:09Off1190EG

Logsheet:1


Page : 1523

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : E.Guðmundsson
Date(s) : 040813 - 040813
File(s) : L20040813_000 - L20040813_001
FilesTime [UT]CommentsCntSOpe
L20040813_00004:33:50On5180EG
L20040813_00004:34:15Off250EG
L20040813_00004:36:07this is the best I can do without burning up to much time5180EG
gettign it right
L20040813_00004:36:54Extinction ratio aprox 32160EG
L20040813_00004:38:37On5400EG
L20040813_00104:43:06Off190EG
L20040813_00104:45:08On5290EG
L20040813_00104:45:16Off170EG
L20040813_00104:51:35On 519 Off =170EG
L20040813_00104:54:16on 440 Off=11, cirrus attenuating signal again110EG
L20040813_00104:56:23339/110EG
L20040813_00105:02:49Interesting to see how the cirrus behaves duirng the flipping0EG
since there is some breasktrough at low altitude.
L20040813_00105:04:07I will continue to flipp since I started this! The strength of the 0EG
NLC presently does not varrant the flipping since it has
Dwindled a bit since start.
L20040813_00105:07:21Cirrus less now, On=524 off =170EG
L20040813_00105:09:17Looks like the NLC strength is increasing again.0EG
L20040813_00105:21:32TX offs=0.6 RX offs=0 syncro rotation 23.4deg0EG
L20040813_00105:25:37Stopped flipping plates , not much left of the NLC now0EG
L20040813_00105:26:33Cirrus getting thicker0EG
L20040813_00106:23:16End of experiment5040EG