Description

Page : 2055

Sondrestrom Lidar Operation Log

Operator(s) : Katelynn, Greer, Katelynn Greer
Purpose : Routine Data Collection
Date(s) : 080729 - 080730
File(s) : L20080729_002 - L20080730_002
Comments : Routine Data collection. Narrow NLC was observed for about 2.5 hours.
However, it was determined that the TX 1/2 wave plate offset is incorrect because
the window on the SGH was rotated several weeks ago. I tried to find the new
correct offset value, but was unable to do so by myself. I will have Christian help
me the next available opportunity.
Logfile : l0807300.log

Setup:0

Page : 2056
[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=Off
Sodium Field stop=0.5mm
Etalon=In
Daystar=4A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0

Page : 2057

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Katelynn Greer
Date(s) : 080729 - 080730
File(s) : L20080729_002 - L20080730_002

Files	Time [UT]	Comments	Cnt	S	Ope
L20080729_002	23:59:39	Start of experiment	29	0	KRG
		SP Energy: 5400 mJ; Counts=12447
		Big Sky 1=0.70; Big Sky 2 = 0.70
		Raman PMT hv = 0.750 w/ 10 dB filter
		Track Sun w/ flipping
	00:30:39		35	0	KRG
	01:10:16		33	0	KRG
	01:36:24		34	0	KRG
L20080729_002	02:05:26		36	0	KRG
	02:38:42	NLC detection?	35	0	KRG
L20080730_000	02:49:40		36	0	KRG
	03:02:41	Anything that was there seems to have dissipated	36	0	KRG
L20080730_000	03:13:43	Hmm, whatever it is, I think it is still there	34	0	KRG
	03:47:01		37	0	KRG
	04:15:34		36	0	KRG
	05:51:16	NLC seems to have dissipated		0	KRG
		Stopping the experiment to optimize TX 1/2 wave plate
	05:51:17	Track sun		0	KRG
		Opening Chopper; Original setting = 35
	06:22:55	TX offset determined to be 68.95		0	KRG
	06:23:23	Returning to original chopper setting		0	KRG
L20080730_002	06:32:17	Offset changed (from 49 to 69), now sun tracking w/ flipping		0	KRG
	06:35:52	OK, new offset is not correct		0	KRG

Logsheet:1

Page : 2058

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Katelynn Greer
Date(s) : 080730 - 080730
File(s) : L20080730_002 - L20080730_002

Files	Time [UT]	Comments	S	Ope
L20080730_002	06:37:08	I will try to get the offset correct tomorrow, I need some	0	KRG
		help doing this
L20080730_002	07:01:33	End of experiment	0	KRG