Description


Page : 689

Sondrestrom Lidar Operation Log


Operator(s) : E.Guðmundsson
Purpose : Routine data Collection
Date(s) : 001123 - 001124
File(s) : L11230 - L11233
Comments : Thick haze present during most of the run.
Picomotors work well.
It seems that the wavmenter shows the maximum sodium return wavelength
differently from run to run. Needs more data runs to be verified.

Rayeleigh beam expander and/or the telescope iris may have to be realigned.
Logfile : l0011230.log

Setup:0


Page : 690
[Variables]
Dye Power=79mJ
Rayleigh Power=530mJ

[0]
Iris=min_opening
Rayleigh System=On
Dye System=On
Daystar=Out
Polarizer=In
HalfWave Plates=In
Rayleigh Filter=2:532(.5nm)

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

Logsheet:0


Page : 691

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : E.Guðmundsson
Date(s) : 001123 - 001124
File(s) : L11230 - L11233
FilesTime [UT]CommentsCntSOpe
L1123022:10:20Start of experiment0
L1123022:15:17!UPS forgot to change recs per scan to 600, incremented00EG
L1123122:15:43Counts64680EG
L1123122:18:14Running with the picomotors for converging65160EG
L1123122:23:03Converged both channels0EG
L1123122:23:14Counts47000EG
L1123122:30:59Converged Rayleigh again0EG
L1123122:39:42It appears as if I have lost counts when I closed the iris,0EG
perhaps that the beam expanders or iris need a closer look
L1123122:44:18Incremented, going to tune +-1 pm to verify max wavelength0EG
L1123223:10:44!!Looks like the maximum sodium reurn is now at589.157nm47980EG
L1123223:15:21Dye ratio on Johns viewer 1.2 when maxed.0EG
L1123223:18:32Opened the Iris a tad37240EG
L1123223:20:00Gained some signal dong this, there is some haze up there!0EG
L1123223:20:49Incremented0EG
L1123323:21:54It appears as if the Rayleigh gained a lot more than the sodium 51061EG
L1123323:26:57The Haze is getting thicker29351EG
L1123300:09:16sodium tuned. tuned from 589.156nm to 589.157nm28801EG
L1123301:12:35counts3821EG
L1123301:48:55End of experiment2311EG