Description


Page : 1834

Sondrestrom Lidar Operation Log


Operator(s) : Christian Have Pedersen
Purpose : Data acq.
Date(s) : 070701 - 070701
File(s) : L20070701_000 - L20070701_001
Comments : Tried different settings of the front end tube in z-axis (1.5-1.9 cm adjustments)
and was able to get a decent profile cutting of at 60-65 km alt.
However, it was expected that the new position of the front end tube (iris) would
have had a greater impact than the experiment showed.
Logfile : I0107070.log

Setup:0


Page : 1835
[0]
front end Iris=1.5mm
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=On
Sodium Field stop=0.5mm
Etalon=Out
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1836

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : Christian Have Pedersen
Date(s) : 070701 - 070701
File(s) : L20070701_000 - L20070701_001
FilesTime [UT]CommentsCntSOpe
L20070701_00002:12:01Start of experiment2230cp
L20070701_00002:29:51Doing adjustments in the z-axis on the front end tube mount0cp
L20070701_00003:11:57That does not look good at all. May need to adj. tx hwp.520cp
L20070701_00003:20:31I am affraid a mistake was made in the stepfile.ini file2430cp
HWP setup wrong. Will need to restart app.
L20070701_00003:23:30Now optimizing HWP. They should now both track correctly.0cp
L20070701_00103:36:03Bck noise cnt. 668. Starting to look like a profile.2900cp
But still the usefull profile stops at approx. 60km
The front end is moved approx. 1.5cm towards the RX
cabinet in z-axis, but this seems to do little?
L20070701_00104:07:01Now trying the front end tube in original pos.1410cp
L20070701_00104:07:19Clouds are moving in.1120cp
L20070701_00104:30:59Clouds are in the line of the laser beam.0cp
L20070701_00104:31:35Had a decent profile with the new pos. of the front end tube.0cp
However, it seems the profile still cuts off at approx 60-65 km alt.229
L20070701_00104:36:05End of experiment0cp