Description

Page : 1797

Sondrestrom Lidar Operation Log

Operator(s) : Christian Have Pedersen
Purpose : No useful data is recorded. Test run with the purpose of reducing noise from scattered light in LIDAR room.
Date(s) : 070205 - 070205
File(s) : L20070116_001 - L20070205_001
Comments : Verified that scattered laser light is leaking into the ARCLITE receiver. The
effect of shielding critical points in the ARCLITE system was measured. There is
a noise level on the sodium channel even after light shielding the system and this
noise must be due to other factors than the scattered light in the LIDAR room.
Logfile : I0502070.log

Setup:0

Page : 1798
[Variables]

[0]
front end Iris=3.0mm
Rayleigh System=Off
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=Off
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 : 1799

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : Christian Have Pedersen
Date(s) : 070205 - 070205
File(s) : L20070116_001 - L20070205_001

Files	Time [UT]	Comments	Cnt	S	Ope
L20070116_001	17:04:30	Start of experiment		0	cp
L20070205_000	17:23:45	Dark LIDAR room. Reference lvl for the next couple of tests.	0	0	cp
L20070205_000	17:24:57	Roof hatch closed and lasers off.	0	0	cp
	17:29:35			0	cp
	17:40:25		0	0	cp
	17:50:13		0	0	cp
	17:58:36		0	0	cp
	18:05:42			0	cp
	18:16:15		0	0	cp
L20070205_000	18:36:52	Found out that frontend was blocked. Doing measurements	0	0	cp
		from the start. Lights on Ref. level first.
L20070205_001	18:50:58	Frontend light.		0	cp
L20070205_001	18:59:49	Fronted light shielded	0	0	cp
L20070205_001	19:12:40	Telescope buttom light. Frontend shielded		0	cp
L20070205_001	19:21:07	Buttom light and partly shielded. (Shield not finished)		0	cp
L20070205_001	19:28:04	Just testing various stuff		0	cp
L20070205_001	19:31:43	End of experiment		0	cp