Fore-optics of the MUSE instrument
2012
MUSE (Multi Unit Spectroscopic Explorer) is a second generation VLT panoramic integral field spectrograph developed
for the European Southern Observatory (ESO), operating in the visible wavelength range (0.465-0.93 μm). The MUSE
instrument is currently under integration and the commissioning is expected to start at the beginning of year 2013. The
scientific and technical capabilities of MUSE are described in a series of 19 companion papers. The Fore-Optics (FO),
situated at the entrance of MUSE, is used to de-rotate and provide an anamorphic magnification (x 5 / x 2.5) of the 1 arc
minute square field of view from the F/15.2 VLT Nasmyth focal plane (Wide Field Mode, WFM). Additional optical
elements can be inserted in the optical beam to further increase the magnification by a factor 8 (Narrow Field Mode,
NFM). An atmospheric dispersion corrector is also added in the NFM. Two image stabilization units have been
developed to ensure a stabilization of the field of view (1/20 of a resolved element) for each observation mode.
Environmental values such as temperature and hygrometry are monitored to inform about the observation conditions. All
motorized functions and sensors are remote-controlled from the VLT Software via the CAN bus with CANOpen
protocol. In this paper, we describe the FO optical, mechanical and control/command electronic concept, development
and performance.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
11
References
3
Citations
NaN
KQI