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
- 1 wide-field PSF monitor
- 4 pick-off mechanisms to feed the star light to the respective WFS channel
- NB: the TWFS/TTFA WFS channels will be fed by 1 pick-off arm located on the brightest star in the field
Dec 14th, 2007
Jan 16th, 2007
Update: the TTFA and TWFS
WFS channels will be fed by 1 pick-off arm located on the brightest star in the LOWFS field of view.
After chats with Viswa and Chris N, the original 4th pick-off arm should be used for a
PSF monitor channel.
-- Anna Moore 12th Dec 2007