Share Email Print

Proceedings Paper

The MICADO first light imager for ELT: its astrometric performance
Author(s): J.-U. Pott; G. Rodeghiero; H. Riechert; D. Massari; M. Fabricius; C. Arcidiacono; R. I. Davies
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report on our ongoing efforts to ensure that the MICADO NIR imager reaches differential absolute (often abbreviated: relative) astrometric performance limited by the SNR of typical observations. The exceptional 39m diameter collecting area in combination with a powerful multi-conjugate adaptive optics system (called MAORY) brings the nominal centroiding error, which scales as FWHM/SNR, down to a few 10 μas. Here we show that an exceptional effort is needed to provide a system which delivers adequate and calibrateable astrometric performance over the full field of view (up to 53 arcsec diameter).

Paper Details

Date Published: 11 July 2018
PDF: 5 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070290 (11 July 2018); doi: 10.1117/12.2312069
Show Author Affiliations
J.-U. Pott, Max-Planck-Institut für Astronomie (Germany)
G. Rodeghiero, Max-Planck-Institut für Astronomie (Germany)
H. Riechert, Max-Planck-Institut für Astronomie (Germany)
D. Massari, Univ. of Groningen (Netherlands)
M. Fabricius, Max-Planck-Institut für extraterrestrische Physik (Germany)
C. Arcidiacono, INAF - Osservatorio Astronomico di Bologna (Italy)
R. I. Davies, Max-Planck-Institut für extraterrestrische Physik (Germany)

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

© SPIE. Terms of Use
Back to Top