(r3) LOWFSOSM < Keck/NGAO

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---++NGAO LOWFS Object Selection Mechanism

---++++Nomenclature:

---++++++NGAO LOWFS OSM
This is a interim OSM for the NGAO system, likely required for first light before the d-IFS is commissioned. The OSM contains:
   * 2 TT star NIR WFS channels
   * 1 TWFS NIR WFS channel
   * 1 TTFA NIR WFS channel
   * 4 pick-off mechanisms to feed the star light to the respective WFS channel

---+++++Dec 14th, 2007
   * [[%ATTACHURL%/ngao-lowfsosm-notes-121507.pdf][Notes and Question on pupil to MEMS/lenslet registration in LOWFS channels]]
   * [[%ATTACHURL%/WFS_vol_req.pdf][Viswa's description of each NGAO WFS channel (TT, TWFS, TTFA, NGS HOWFS and LGS WFS)]]


-- Anna Moore 12th Dec 2007