Date and operator
Operator(s):
Startup Index
A. Startup (HQ)
B. Startup (Summit)
C. Setup NIRC2 for Checkout
D. NGS-AO Checkout
E. Laser Alignment at Zenith
F. LGS-AO Checkout
G. Submit the form
A. Startup (SA)
In any of the ThinClients, start the VNC sessions:
In the ThinClient background menu, select
VNC Viewer
input:
svncserver2:3
Alternatively, in the ThinClient background menu, select
Local xterm
and type:
vncviewer svncserver2:3
Use the standard login info for
k2obsao
.
Within the
k2ao-k2obsao-control1
VNC desktop, from the pulldown menu, select:
LGS-AO Control Menu → Start all LGS-AO software
Wait about
3 minutes
for all the GUIs to come up and position themselves.
Load the file
idl_opensYYMMDD.sav
in
Spiral
.
Open the MAGIQ GUI and map the OA starlist:
In the background menu of
k2ao-k2obsao-control0
select:
K2 Guider Eavesdropping → Start Observer UI
In MAGIQ
File → Map OA Starlist
Start and configure the Strehl tool:
In the background menu of
k2ao-k2obsao-control0
select:
K2 AO Tools → AO OPS → Strehl Tool
Select
AUTOFIND OFF
.
Select
AUTO UPDATE IMAGE ON
.
Load the current starlist into the Aoacq GUI by hitting the button
Load
under the field
Target
.
Use this page to record values.
Back to Startup Index
B. Startup (Summit)
Start the VNC viewer via the pull-down:
VNC Menu → Start Acquisition Viewer
Back to Startup Index
C. Setup NIRC2 for Checkout
In waikoko xterm type:
Type
user lgsao
Type
aocheckout
Back to Startup Index
D. NGS-AO Checkout
From
MAORI
Menu → Scripts → Night-time setup
Select options:
LGS-AO
Beam splitter
Select an engineering star from the starlist (about an hour to the East)
Slew to calibration star
In AoAcq widget:
Set:
AO Mode
NGS-AO
DAR
Off
Ref
NIRC2
Setup Bench
From
MAORI
Menu → Start Fault Detector
On
K2 CLS Sequencer
GUI, select
Scripts → Start of Night
to enable night time mode.
a pop-up may ask
Are you sure
. Answer
yes
.
A second pop-up may inform you that
All updates are complete.
Wait till sunset, dome open...
Request that OA calls Space Command to let them know we are intending to propagate the Keck 2 laser.
Ask the OA for the
NIRC2
PO.
Click
Acquire Star
in the Aoacq GUI.
Wait till loops are closed and watch for varying WFS intensity (if sky is bright and changing).
If WFS intensity decreases with time, hit
Record bkg 30" E
in the WFS Intensity GUI.
Repeat until WFS intensity is constant.
Once WFS intensity is fairly constant, take a new background
Hit
return
in the
waikoko
window to start
NIRC2 calibration images
:
Measure and record the
NGSAO-corrected
NIRC2
FWHM
from the Quicklook GUI:
Plot → Gaussian Fit
.
Measured FWHM:
milli-arcsec
.
Measure and record the
NGSAO-corrected
Strehl
with the Strehl Tool:
Hit
GO!
to refresh the image.
Click on the star to measure the Strehl.
Measured Strehl:
%
.
Record
telescope focus
from FACSUM:
mm
.
Hit
return
in the
waikoko
window to start recording
NIRC2 seeing
in the Kp filter (the script will open the DM loop and will keep the TT loop closed).
Measure and record the
open-loop
NIRC2
FWHM
from the Quicklook GUI:
Plot → Gaussian Fit
.
Set
X FWHM
to
150
.
Set
Y FWHM
to
150
.
Measured FWHM:
arcsec
.
Record star
FWHM
from the ACAMTOOL:
Set
tint
to
1.0 sec
.
goi
.
Measured FWHM:
arcsec
.
File number:
In the AO acquisition GUI,
Loops → Open
.
Back to Startup Index
E. Laser Alignment at Zenith
Slew to
LASER ZENITH
at
OPT AXIS
PO
In AoAcq widget:
Set:
AO Mode
LGS-AO
DAR
Off
Ref
OPT AXIS
Wait until telescope is slewing to
LASER ZENITH
Setup Bench
Select
Sodium Dichroic
The
rotator should be set automatically
to 0 degrees in vertical angle mode (90.02 on the drive angle). If not, run
rotate -0.7 vertang
in NIRC2 waikoko xterm.
When bench setup is done, click
Cal Setup
in
ACAM
. A popup window indicates that the
TELFOCUS
value will change by about
+3.5mm
to correct for the sodium height. Click on
Yes
and wait for the Acamtool to display:
Ready to take image
WAIT FOR 12 DEG TWILIGHT, THEN REQUEST PROPAGATION
Propagate laser
from CLS Sequencer GUI:
Click
INITIALIZE
and wait for status to indicate initialized.
Click
ALIGN
and wait for status to indicate aligned.
Click
PROPAGATE
.
Run
laser alignment procedure
in the
ACAM Tool
:
Set
Tint (s)
to
5 seconds
.
Take an exposure by hitting
goi
.
Click
COARSE
to center spot on ACAM.
Repeat
goi
and
COARSE
until you see light on the WFS
Click
HOME
.
A popup may ask to update the LGSAO POs. The answer is
YES
.
Review the ACAM image:
If the
laser spot size is 1.8 arcsec or smaller
skip the Automated and Manual focus because spot size is good enough.
Skip to fine alignment
if no adjustment is required.
If the spot size is larger try to refocus the laser:
Automated method:
Click on
Focus LTA
on ACAM Tool. This will take a series of sub frames centered on the laser spot. Focus will change between images.
Plot will display the focus curve for both the x and y axis.
In the xterm that pops up,
enter your estimated BTOB focus value or the best fit BTOB focus value
provided in the terminal output.
Manual method:
Disable temperature compensation:
on CLS sequencer GUI, click on the focus icon located on right hand side to bring up the BTOB Focus Compensation GUI
At the top fo the BTOB Focus compensation GUI
toggle Enabled to disabled
.
From
kNobsao@kNaoserver
type
s lsxf
to determine intial focus value.
Save an ACAM image and then modify the
lsxf(mm)
value by 0.5 mm (initial guess) and repeat the ACAM image.
Analyze images for smallest spot (between 1.0-2.0 arcseconds FWHM, seeing dependent).
Set
lsxf(mm)
to best value
on the BTOB Focus Compensation GUI, click
Set Base Focus
(light blue button on GUI).
on the BTOB Focus Compensation GUI, toggle back to Enable (button at top of GUI). XF value should remain fixed.
Record BTOB Focus Compensation
mm
Click
FINE
.
Wait for
Offload complete
or
Alignment complete
.
Click
DONE
.
In the AO acquisition GUI,
Loops → Open
.
Shutter the laser by clicking
SHUTTER
on the CLS Sequencer GUI.
Ask the OA to return
TELFOCUS
back to the value recorded during the NGS checkout.
Back to Startup Index
F. LGS-AO Checkout
Run
rotate 0
in NIRC2 waikoko xterm to set rotator PA = 0.
Slew to a 10-14 magnitude star (from the observer's target list or close to the observer's first target)
Set the telescope PO to
NIRC2
In AoAcq widget:
Set:
AO Mode
LGS-AO
DAR
Acq & Track
Ref
NIRC2
Setup Bench
Select
sodium Dichroic
Acquire star
(wait for good image sharpening)
In the
Optimization Tool
:
Set the optimizer mode to
STRAP
.
Hit
TRIGGER
to run a diagnostic.
When completed, click
SET OPT GAIN
.
Hit
TRIGGER
to run another diagnostic.
Repeat until current TT gain matches recommended TT gain... Then:
Copy
DIAG #
into
TURB PS
field in optimization tool.
Record
Set the optimizer mode to
LGS
:
Tweak Frame Rate & DM gain in MAORI, try again
if rate changed, take another sky with
reclose loops
Take NIRC2 image from Waikoko:
Let the LBWFS RMS and dfoc settle
Press return in the NIRC2 xterm to continue the checkou script.
Record
LGSAO-corrected
FWHM and STREHL:
FWHM:
milli-arcsec
Strehl:
%
In the AO acquisition GUI,
Loops → Open
.
Shutter the laser by clicking
SHUTTER
on the CLS Sequencer GUI.
Back to Startup Index
G. Submit the form
Please, hit the SUBMIT button to
store data
⟹
Back to Startup Index