X-shooter
User Manual
Doc:
Issue
Date
Page
VLT-MAN-ESO-12000-0115
1
01.03.2009
10 of 60
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
2.
Technical description of the instrument
2.1
Overview of the opto-mechanical design
Figure 2 shows a schematic view of the layout of the instrument. It consists of four main
components:
•
The backbone which is directly mounted on the Cassegrain derotator of the
telescope. It contains all pre-slit optics: the calibration unit, a slide with the 3-
positions mirror and the IFU, the acquisition and guiding camera, the dichroic box
which splits the light between the three arms, one piezo tip-tilt mirror for each arm to
allow active compensation of backbone flexures, atmospheric dispersion
compensators (ADCs) in the UVB and VIS arms and a warm optical box in the NIR
arm.
Figure 2: Schematic overview of X-shooter
