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GALACSI DESIGN<br />
Left: 3D GALACSI optical<br />
scheme, as view from<br />
MUSE.<br />
Left: 3-D optomechanical<br />
design of<br />
GALACSI: the LGS<br />
path module is<br />
shown in more detail<br />
enlarged above on<br />
the right.<br />
<strong>VLT</strong><br />
VISIBLE<br />
TIP-TILT<br />
PATH<br />
Above: the<br />
camera is the<br />
same as for<br />
GRAAL.<br />
Right: WFS<br />
detector and<br />
electronics.<br />
COMMISSIONING<br />
CAMERA PATH<br />
Pyramid optical beam splitting of the 4 laser<br />
guide stars onto the 4 WFS.<br />
LGS PATH 1<br />
MUSE<br />
CALIBRATION<br />
PATH<br />
LGS PATH 4<br />
LGS PATH 2<br />
LGS PATH 3
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