Description


Page : 485

Sondrestrom Lidar Operation Log


Operator(s) : E.Gudmundsson
Purpose : Routine data collection with IS radar
Date(s) : 000314 - 000314
File(s) : L3140 - L3142
Comments : Optimzing daystar and data collection. As a result of work with the open receiver
the Rayleigh data during daystar setup is noisy on ocation. The same goes for the
Sodium channel but sodium layer was visible at all times. Nice and clear skyes.

At the beginning almost no transmission was trough the Daystar or ~10
counts After work on the daystar was quit the maximum Daystar transmission was
around 13% or ca 800counts.

The last file in the experiment contains normal sodium and Rayleigh data (see
setups).
Logfile : l0003140.log

Setup:0


Page : 486
[Variables]
Dye Power=95mJ
Rayleigh Power=560mJ

[0]
Iris=1.5mm
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

[1]
Iris=1.5mm
Rayleigh System=On
Dye System=On
Daystar=In
Polerizer=Out
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

Logsheet:0


Page : 487

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators : E.Gudmundsson
Date(s) : 000314 - 000314
File(s) : L3140 - L3140
FilesTime [UT]CommentsCntSOpe
L314000:10:26Start of experiment80390
L314000:15:45Both systems are running for the moment but the receiver0EG
will be open for a while during daystar optimizing.
L314001:05:28paused0EG
L314001:09:22resuming with setup 1, tweeking daystar0EG
L314002:43:18Slid the Daytar out of the path to see if convergence has0EG
changed. should get around 8000 counts
L314002:44:14Looks like the Convergence has remained stable77540EG
L314002:45:18Sliding the daystar in the path again, counts should be 0EG
just below/around 700counts.
L314002:46:43Done putting the daystar in the path5400EG
Not quite back to the same counts.
L314003:03:30Sodium convergence tweeked8790EG
L314003:14:064.6 to 5.2 on daystar temperature controller0EG
L314004:02:015.2 to 4.5 on daystar temp pod, waiting for change9500EG
L314004:10:054.5 to 4.0 on daystar pod, waiting for responce8940EG
L314004:14:32Counts got worse8000EG
L314004:15:004,0 to 4.5 on pod0EG
L314004:24:42signal increase, takes about 14min for the temp. to settle9350EG
L314004:33:424.5 to 5.75 on pod9020EG
L314004:33:46Reconverged sodiumdifferent conditions after radar shut down8200EG
L314004:34:30Only about 13% transmission trough the daystar with the8500EG
current settings848
L314004:39:09testing with the TX HWP if I could inprove things by0EG

Logsheet:1


Page : 488

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : E.Gudmundsson
Date(s) : 000314 - 000314
File(s) : L3140 - L3142
FilesTime [UT]CommentsCntSOpe
L314004:39:44rotating the daystar1EG
L314004:50:17Moving tx offset made thindgs worse, for both directions8211EG
L314104:51:49incremented filenumber8011EG
L314105:23:12Sliding the daystar out of the path7581EG
L314205:24:44Incremented filenumer0EG
L314205:25:59Counts71830EG
L314205:26:07Note, Just above 10% transmission on the daystar71830EG
L314205:29:47Sodium Convergence mirror adjusted80720EG
L314206:26:14UPS forgot to note my tuning ca 10-15min ago83200EG
got improved sodium counts
L314207:11:31Counts86650EG
L314208:13:29Ending experiment82930EG
L314208:14:30End of experiment82930EG