Description


Page : 1970

Sondrestrom Lidar Operation Log


Operator(s) : Matthew Hayman
Purpose : Run 532 and Raman Channels. Correct issue with chopper timing
Date(s) : 080522 - 080522
File(s) : L20080522_000 - L20080522_002
Comments :
Logfile : l0805210.log

Setup:0


Page : 1971
[0]
front end Iris=max_opening
Rayleigh System=On
Rayleigh Field stop=4.0mm
Rayleigh path attenuation=0dB
Dye System=On
Sodium Field stop=0.5mm
Etalon=Out
Daystar=8A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1972

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : Matthew Hayman
Date(s) : 080522 - 080522
File(s) : L20080522_000 - L20080522_002
FilesTime [UT]CommentsCntSOpe
00:06:09Start of experiment0M.H.
L20080522_00001:04:11Putting on cabinet door. Trying to identify source of irregularity0CP
(dip) at 40-60km in profile.-37
L20080522_00001:10:04Still a lot of background around chopper opening time 0CP
Slow chopper or just too much background > Now trying to
reduce frontend iris.25
L20080522_00001:18:58Now trying to readjust secondary iris. Curious to see the effect.0CP
L20080522_00001:23:12Secondary Iris fully open0M.H.
L20080522_00001:26:14Opening up frontend iris a tiny bit, to see if that gives us 0M.H.
more height on the profile.57CP
L20080522_00001:42:17570M.H.
L20080522_00001:55:45Turning on Big Sky S laser and converging0M.H.
L20080522_00001:57:58Attenuating BigSky Laser0M.H.
L20080522_00002:20:32Bringing Raman Channel Online0M.H.
L20080522_00002:53:37light scattered clouds have moved in over lidar transmissin250M.H.
L20080522_00003:17:46significant cloud cover. may clear in ~10 min0M.H.
L20080522_00206:36:41GPIB Error reported in raman channel0M.H.
L20080522_00206:39:33raman PMT over voltage. Reduced to 0.650M.H.
L20080522_00206:56:39flipping half wave0M.H.
06:57:37End of experiment0M.H.