AO Calibrations Check

1. Start all LGS software by typing lgsao_start_vnc in a k2aoserver xterm. The xterm should be positioned in the upper left virtual window of the control-0 desktop when the command is issued.
2. Start CalTools using the desktop menu: K2 AO tools -->Calibration Tools
3. Kill the AOACQ tool.
4. Run the Calibration Setup. From Keck II Calib gui select Calibration setup
   if prompted, select
   • NGS-AO
5. Run the light source gui:
   From Keck II Calib gui select Light Source and select:
   • 1.0 trans
   • HEPA off
6. Restart the AOACQ GUI in simulator mode:
   • Start and IDL session
   • In IDL, aoacq , /sim
7. in a kealoha xterm (or local xterm) run sounds kealoha so as not to annoy the summit staff with the sounds.
8. In the AOACQ GUI do the following:
   • set Rmag = 9.0 (mR=9.0)
   • set AO Mode = NGSAO
   • set PO = NIRC2 (for NIRC2, but use OSPEC OSIRIS).
   • set seeing = 0.0
   • run Setup Bench
   • Manually command SFP to NIRC2 (or OSPEC) via the SCGUI (this step is no longer automatically peformed by aoacq).
9. start and setup the instrument.
   If using NIRC2, run in a waikoko xterm
   • user nirc2eng
   • ao_confirmation which will do the following
     • set filt brgamma
     • set camera narrow
     • set pupil open
     • set shutter open
     • set subc 700
     • set tint 0
     • set coadd 10
     • set a new engineering data directory with "newdir"
     • set wait4ao to off
     • set the object name to "ao_confirmation"
     • then takes an image using goi.
   • then check the image quality. Should be around 45 mas.
   If using OSIRIS
   • set the following instrument parameters:
     • sscale 20mas
     • sfilt Kn3
     • itime 2
     • coadd 1
   • take an image: goi
   • check the image quality.
10. Using the AOACQ gui: click acquire star
11. On the MAORI, set the gains to 0.1.
12. check image on the instrument. For NIRC2 the PSF is typically round with FWHM of 45 mas. Elongated PSF \ or PSF with FWHM > 50 mas is considered poor. .
13. If you need to check other pointings, repeat 7-11 for other pointings
14. Run the light source gui:
    From Keck II Calib gui select Light Source and select:
    • 1.0 trans
    • HEPA off
15. Using the AOACQ Gui:
    • set AO Mode = NGS-STRAP
    • set po = "instrument of choice"
    • run Setup Bench
      if prompted, select:
      • sodium dichroic
    • run Acquire star
16. On the MAORI, set the gains to 0.05 (TT) and 0.2 (DM).
17. Acquire an image on the instrument of choice and retest the image quality.
18. On the Low-Bandwidth manager gui
    • confirm that cog control is off
    • confirm that focus control if off
19. Using the MAORI gui:
    check that STRAP is not gated, may need to increase to ND2.
    • check that TT gain is set low, e.g. 0.002
    • FCS is set to FCSC0 (e.g -4.977 for NIRC2)
20. Check that LBWFS cog file is current
    This may be checked
    • in the SC gui
    • on the Low-Bandwidth manager gui
21. Confirm that LBWFS does not sense focus or aberration (defoc < 0.2, and the graph looks flat). You may need to start looping.
22. Check for 5x5 mode (the default was 20x20).
    • First halt looping on the LBWFS Img Acq
    • Select 5x5 11 modes on the Low-Bandwidth Manager
    • Select loop on the LBWFS Img Acq
    • Confirm that LBWFS does not sense focus or aberration in 5x5 mode (defoc < 0.2, and the graph looks flat).
    • Put everything to safe mode, shutdown software, logout, put the cat out, go home, and get some rest
      AO Ops Team
      Last modified: Sat Sep 1 16:37:03 HST