CHARA AO: Second Meeting

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2011 Jul 07

Check on Action Items:

  • SR: no progress with new quotes for M4 DM
  • CS: send a report earlier about the
  • LS: Did send a ZEMAX of M1-6 to JDM
  • Simulations
  • Real-time architecture

New Action Items:

  • JDM will update documention here with Chris Shelton's memo
  • Collect feaures we need in this system, e.g. be able to image the laser going out,

stimulus, IR beacon, acquisition camera,

  • How is angle beacon going to function? can we have a separate tip-tilt MIRROR for the lab loop? not cheap .. probably will use offsets to the WFS.
  • Can we do this ALL in NIR? or do we need to use a visible WFS for star light?
  • Cool idea is to use beacon for everything! keep current system! choose wavelength like 1.3 micron (laser interference issue).
  • Stuff for FAST-WFS camera and RT architecture. Quick study -- see previous meeting
  • Ask VEGA/PAVO about using 0.96 micron light for the beacon ( can be then be

stimulus for telescope AO WFS as well as lab slow WFS)

  • Bring-up sequence for how to not screw up current performance.
  • Shear issue for the slow WFS. If we add 2 extra reflections to when we the slow WFS, we could do SHEAR control -- which would be GREAT!!! (who will do this? Theo?)
  • not funded to do dicroic switcher -- but we need to try to do it anyway somehow!!
  • We want to move forward to ask Keck Foundation for phase II
  • Theo has a dropbox directory for this
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