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The MICADO first light imager for the ELT: preliminary design of the MICADO Calibration Assembly
Author(s): G. Rodeghiero; J.-U. Pott; N. Münch; R.-R. Rohloff; U. Grözinger; E. Biancalani; M. Sawczuck; M. Häberle; J. Moreno-Ventas; S. Schäfer; U. Seemann; V. Naranjo; S. Barboza; F. Müller; R. Hofferbert; J. Ramos; L. Mohr; M. C. Cárdenas Vázquez; P. Bizenberger; C. Pernechele; M. Ebert; M. Fabricius
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Paper Abstract

The paper describes the preliminary design of the MICADO calibration assembly. MICADO, the Multi-AO Imaging CAmera for Deep Observations, is targeted to be one of the first light instruments of the Extremely Large Telescope (ELT) and it will embrace imaging, spectroscopic and astrometric capabilities including their calibration. The astrometric requirements are particularly ambitious aiming for ~ 50 μas differential precision within and between single epochs. The MICADO Calibration Assembly (MCA) shall deliver flat-field, wavelength and astrometric calibration and it will support the instrument alignment to the Single-Conjugate Adaptive Optics wavefront sensor. After a complete overview of the MCA subsystems, their functionalities, design and status, we will concentrate on the ongoing prototype testing of the most challenging components. Particular emphasis is put on the development and test of the Warm Astrometric Mask (WAM) for the calibration of the optical distortions within MICADO and MAORY, the multiconjugate AO module.

Paper Details

Date Published: 11 July 2018
PDF: 20 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107028U (11 July 2018); doi: 10.1117/12.2311721
Show Author Affiliations
G. Rodeghiero, Max-Planck-Institut für Astronomie (Germany)
J.-U. Pott, Max-Planck-Institut für Astronomie (Germany)
N. Münch, Max-Planck-Institut für Astronomie (Germany)
R.-R. Rohloff, Max-Planck-Institut für Astronomie (Germany)
U. Grözinger, Max-Planck-Institut für Astronomie (Germany)
E. Biancalani, Max-Planck-Institut für Astronomie (Germany)
M. Sawczuck, Max-Planck-Institut für Astronomie (Germany)
M. Häberle, Max-Planck-Institut für Astronomie (Germany)
J. Moreno-Ventas, Max-Planck-Institut für Astronomie (Germany)
S. Schäfer, Georg-August-Univ. Göttingen (Germany)
U. Seemann, Georg-August-Univ. Göttingen (Germany)
V. Naranjo, Max-Planck-Institut für Astronomie (Germany)
S. Barboza, Max-Planck-Institut für Astronomie (Germany)
F. Müller, Max-Planck-Institut für Astronomie (Germany)
R. Hofferbert, Max-Planck-Institut für Astronomie (Germany)
J. Ramos, Max-Planck-Institut für Astronomie (Germany)
L. Mohr, Max-Planck-Institut für Astronomie (Germany)
M. C. Cárdenas Vázquez, Max-Planck-Institut für Astronomie (Germany)
P. Bizenberger, Max-Planck-Institut für Astronomie (Germany)
C. Pernechele, INAF OAPD (Italy)
M. Ebert, Max-Planck-Institut für Astronomie (Germany)
M. Fabricius, Max Planck Institute for extraterrestrial Physics (Germany)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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