NGS-AO (required for both, NGS and LGS calibrations)

Setup the AO bench and close the loops:

1. On the svncserver2:3 VNC desktop, select from the background menu NGS-AO Control → Start NGS calibrations
2. Keck II Calib → Calibration setup. If prompted:
   • Select NIRSPAO
   • Select NGS-AO
3. SC GUI → SF (SFP) → obsfname → scam
4. Keck II Calib → Light Source Control
   • ND4
   • If HEPA still on, Click for HEPA OFF
5. Check that the AOACQ GUI is in simulator mode (Aoacq - vX.Y CLS SIMULATION MODE). Otherwise, start the AOACQ GUI in simulator mode. In a k2aoserver terminal as k2obsao:
   • Start IDL session
   • In IDL, aoacq , /sim
6. In the Aoacq GUI:
   • mR → 12.9
   • AO Mode: NGS-AO
   • Ref: AO SCAM
   • Seeing: 0.0
   • Run Setup bench
7. Record a new WFS background:
   • Light Source Control → BLOCK
   • WFS Intensity GUI → Record bkgd only
   • Light Source Control → ND4
8. Aoacq GUI → Acquire star
9. MAORI → AO Control
   • TT gain → 0.1
   • DM gain → 0.1

Setup NIRSPEC and take closed-loop image with SCAM:

1. On the nspeceng VNCs:
   • EFS → Obs. Mode → Setup Only
   • EFS → Filter → FeII
   • EFS → GO
2. Monitor the setup progress on the NIRSPEC instrument control GUI and on the wait_wrapper popup terminal. Double check that:
   • The Fold mirror stays Out
   • The FEU flip stays In
   • The Pinhole stays Out
   • The Hatch stays Closed
3. Once the setup is completed, take a SCAM background image on a nirspec terminal with the following commands:
   • tint2 0.67 (shortest SCAM exposure time in seconds)
   • coadds2 1
   • goi2
4. Set the last image as background for Ginga. On the SCAM Ginga display NIRSPEC_SCAM → Use last as subtraction
5. Open the NIRSPEC hatch and take an image with SCAM:
   • NIRSPEC instrument control → Hatch → New value → Open → Apply
   • On a nirspec terminal, use the following command goi2

Check the closed-loop image quality by measuring the FWHM of the fiber source image on SCAM using the Pick tool on the SCAM Ginga display. The image quality is considered acceptable if the fiber image is not too elongated and the FWHM of the PSF as measured by the Pick tool is < 4.5 pix on SCAM. See example here of an acceptable closed-loop image on SCAM showing 4.3 pix FWHM (65 mas). Note, it is helpful to adjust the Cut levels on the Ginga SCAM display to something like low=0 and high=1000.

Put NIRSPEC in safe mode: NIRSPEC instrument control → Hatch → New value → Closed → Apply

• If only need to checkout NGS, put AO in safe mode
• If also need to checkout LGS, go to additional checkout for LGS-AO

Additional checkout for LGS-AO

It is currently not possible to take a SFP fiber image with SCAM when AO is configured in NGS-ST mode, because the brightness required to get enough counts of the WFS with the sodium dichroic in the optical path saturates the SCAM.

Put AO in safe mode

• In a NIRC2 control window type shutter close
• Keck II calib → Dismiss
  • If AO loops are still closed, select Open loops
  • Select Turn HEPA ON
  • Put the system in standby? If night observations are going to start in the next one or two hours, select YES, otherwise select NO
  • Turn the light OFF
• Move the SFP to the telescope position. In the SC GUI
  • SF (SFP) → obsfname → prehome (wait until INPOS)
  • SF (SFP) → obsfname → home (wait until INPOS)
  • SF (SFP) → obsfname → telescope
• In the case of NGS-AO calibrations, select on the background menu NGS-AO Control → Stop most NGS-AO Software
• In the case of LGS-AO calibrations, select on the background menu LGS-AO Control → Stop most LGS-AO Software