Description

Page : 1116

Sondrestrom Lidar Operation Log

Operator(s) : J. M. Holmes
Purpose : Seek Sporadic Sodium Layers on Na channel Correct optical misalignment on Rayleigh channel
Date(s) : 021226 - 021226
File(s) : L20021226_000 - L20021226_001
Comments : Began data acquisition with Na beam only. Return is similar to previous runs, so
no
adjustments to Na steering were made.

Will attempt a realignment of the Rayleigh beam by adjusting the folding mirror

immediately downstream of the beam expander.

Realignment unsuccessful: failure to get rayleigh laser return in detector. I'll ask
Eggert Gudmundsson where the location of the iris is so I can open it up to more
easily find the beam.
Logfile : l0212250.log

Setup:0

Page : 1117
[Variables]
Dye Power=94.0 mJ

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

Logsheet:0

Page : 1118

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : J. M. Holmes
Date(s) : 021226 - 021226
File(s) : L20021226_000 - L20021226_001

Files	Time [UT]	Comments	Cnt	S	Ope
L20021226_000	01:20:32	Start of experiment	0	0	JMH
L20021226_000	01:20:32	Clear with stratus clouds on southern horizon	0	0	JMH
L20021226_000	01:29:14	Na layer peak counts ~= Rayleigh scatt. @ 33km	0	0	JMH
L20021226_000	01:57:17	Chopper adjusted. No net change.	0	0	JMH
L20021226_000	02:11:06	Chopper moved from 3394 us to 3494 us.	0	0	JMH
L20021226_000	02:26:10	Chopper moved from 3494 us to 3394 us.	0	0	JMH
L20021226_001	05:12:35	End of experiment	0	0	JMH