Description

Page : 584

Sondrestrom Lidar Operation Log

Operator(s) : A.Merkel, J.Jørgensen, K.Richmond, E.Guðmundsson
Purpose : NLC detection and routine data taking
Date(s) : 000624 - 000626
File(s) : L6240 - L6260
Comments : The skies are very clear.

The sodium energy is still low. The dye needs to be changed.

This run was for about 36 hours. We saw several NLCs. The system was run
during
the day. There heat problems at the heat of the day. But the system worked very
well besides that.
Logfile : l0006240.log

Setup:0

Page : 585
[Variables]
Dye Power=80 mJ
Rayleigh Power=520 mJ

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

Logsheet:0

Page : 586

Sondrestrom Lidar Operation Log

Log Sheet 1 of 3
Operators : A.Merkel, J.Jørgensen, K.Richmond
Date(s) : 000624 - 000625
File(s) : L6240 - L6250

Files	Time [UT]	Comments	Cnt	Ope
L6240	21:24:39	Start of experiment	1708	AM
L6240	21:30:15	sza=68.7	1708	AM
L6240	21:31:29	sporadic sodium layer	1659	AM
L6240	21:33:32	Sodium Convergence mirror adjusted	1593	AM
L6240	22:42:25	Rayleigh HG adjusted	1539	AM
L6240	22:42:34	Sodium channel adjusted from 589.160 to 589.158	1539	AM
L6240	22:46:04	Rayleigh Convergence mirror adjusted	1805	AM
L6240	22:49:58	Sodium Convergence mirror adjusted	1805	AM
L6240	23:33:36	Rayleigh HG adjusted	1611	AM
L6240	02:20:30	Rayleigh HG adjusted	1766	AM
L6240	02:21:09	sporadic sodium layer	1810	AM
L6240	03:07:57	NLC detection	1551	AM
L6240	03:08:05	getting stronger, rayleigh equivalence of 70 km on int. signal	1599	AM
L6240	03:09:11	Rayleigh HG adjusted	1675	AM
L6240	03:11:37	Dye system tuned to 589.158 nm	1711	AM
L6240	04:11:40	stil have the NLC but it is still weak	1682	AM
L6240	05:23:49	stronger NLC coming in, Rayleigh equivalent of 65 km	1817	AM
L6240	06:21:37	Sodium Convergence mirror adjusted	1994	AM
L6240	06:44:42	Big NLC, rayleigh equivalent of 58 km	2146	AM
L6240	06:47:42	Sodium Convergence mirror adjusted	2184	AM
L6240	08:12:42	Incremented	2279	EG
L6250	08:24:32	Sodium Convergence mirror adjusted	2271	AM
L6250	09:53:06	NLC still going strong. Rayleigh equiv. 50 Km	1951	JJ
L6250	11:47:23	NLC faded	2062	KR

Logsheet:1

Page : 587

Sondrestrom Lidar Operation Log

Log Sheet 2 of 3
Operators : K.Richmond, E.Guðmundsson
Date(s) : 000625 - 000626
File(s) : L6251 - L6260

Files	Time [UT]	Comments	Cnt	S	Ope
L6251	13:29:37	Incremented file number	2353	0	KR
L6251	13:30:02	Thin haze layer	2353	0	KR
L6251	14:32:04	Sodium tuned, Convergence mirror adjusted	1961	0	EG
L6251	14:37:32	Rayleigh HG adjusted	1973	0	EG
L6251	14:43:33	Rayleigh Convergence mirror adjusted	2010	0	EG
L6251	17:06:55	Dye system tuned to 589.158 nm	2094	0	KR
L6251	18:29:14	Sodium Convergence mirror adjusted	2358	0	KR
L6251	18:59:28	Sodium Convergence mirror adjusted	2189	0	EG
L6251	20:15:32	Temperature in the sodium room 31deg Celsius	1669	0	EG
L6251	20:16:08	30deg C in the Rayleigh room	1669	0	EG
L6251	20:17:02	Rayleigh HG adjusted	1662	0	EG
L6251	20:51:07	Sodium SR430 died because of overheat!!		0	EG
L6251	21:04:25	sodium Sr430 working again, used a vacum cleaner to force	1431	0	EG
		air trrough the unit to cool it down. Turned of the PMT
		Coolers to reduce heat output in the rack
L6251	21:20:36	Rayleigh Convergence mirror adjusted	1361	0	EG
L6251	22:12:24	!!! NLC		0	EG
L6251	22:12:39	Dye system tuned to 589.158 nm (from (.159nm)	1807	0	EG
L6251	22:13:52	Incremented	1742	0	EG
L6252	23:46:43	!!! Sporadic sodium observed peek at 95km		0	EG
L6252	00:00:05	Checked wavemter wavelength, stable at 589.158nm	2185	0	EG
L6252	00:24:45	Incremented filenumber	2364	0	EG
L6260	00:25:39	wavemeter still stable at 589.158nm	2400	0	EG
L6260	00:54:59	Wavemeter showed 589.157nm, tuned to 589.158nm (cont..)	2492	0	EG

Logsheet:2

Page : 588

Sondrestrom Lidar Operation Log

Log Sheet 3 of 3
Operators : E.Guðmundsson
Date(s) : 000626 - 000626
File(s) : L6260 - L6260

Files	Time [UT]	Comments	Cnt	S	Ope
L6260	00:55:41	as there was a change in the densities of the Na sporadic		0	EG
		just now.
L6260	00:57:03	Note, the temperature in the dye laser rom is falling fast now.		0	EG
L6260	01:12:09	Tweeked Dye laser HG, energy was nown to~45mJ		0	EG
		got it up to ~85mJ (Temp drift)
L6260	02:01:48	Checked wavemter reading still at 589.158nm	2415	0	EG
L6260	04:19:57	Rayleigh HG adjusted		0	AM
L6260	05:11:25	Rayleigh HG adjusted	1558	0	AM
L6260	07:56:34	no NLCs tonight	2411	0	AM
L6260	07:57:14	End of experiment	2411	0	AM