The MICADO first light imager for ELT: its astrometric performance
Date Issued
2018
Author(s)
Pott, J. -U.
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Riechert, H.
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Fabricius, M.
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Davies, R. I.
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).
Coverage
Ground-based and Airborne Instrumentation for Astronomy VII
All editors
Evans, Christopher J.; Simard, Luc; Takami, Hideki
Series
Volume
10702
Start page
1070290
Conferenece
Ground-based and Airborne Instrumentation for Astronomy VII
Conferenece place
Austin, Texas, United States
Conferenece date
10-15 June, 2018
Issn Identifier
0277-786X
Ads BibCode
2018SPIE10702E..90P
Rights
open.access
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