Translator Disclaimer
Paper
13 September 2012 ERIS adaptive optics system design
Author Affiliations +
Abstract
The Enhanced Resolution Imager and Spectrograph (ERIS) is the next-generation instrument planned for the Very Large Telescope (VLT) and the Adaptive Optics facility (AOF). It is an AO assisted instrument that will make use of the Deformable Secondary Mirror and the new Laser Guide Star Facility (4LGSF), and it is planned for the Cassegrain focus of the telescope UT4. The project is currently in its Phase A awaiting for approval to continue to the next phases. The Adaptive Optics system of ERIS will include two wavefront sensors (WFS) to maximize the coverage of the proposed sciences cases. The first is a high order 40x40 Pyramid WFS (PWFS) for on axis Natural Guide Star (NGS) observations. The second is a high order 40x40 Shack-Hartmann WFS for single Laser Guide Stars (LGS) observations. The PWFS, with appropriate sub-aperture binning, will serve also as low order NGS WFS in support to the LGS mode with a field of view patrolling capability of 2 arcmin diameter. Both WFSs will be equipped with the very low read-out noise CCD220 based camera developed for the AOF. The real-time reconstruction and control is provided by a SPARTA real-time platform adapted to support both WFS modes. In this paper we will present the ERIS AO system in all its main aspects: opto-mechanical design, real-time computer design, control and calibrations strategy. Particular emphasis will be given to the system performance obtained via dedicated numerical simulations.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Enrico Marchetti, Miska Le Louarn, Christian Soenke, Enrico Fedrigo, Pierre-Yves Madec, and Norbert Hubin "ERIS adaptive optics system design", Proc. SPIE 8447, Adaptive Optics Systems III, 84473M (13 September 2012); https://doi.org/10.1117/12.926307
PROCEEDINGS
14 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

NAOMI: a new adaptive optics module for interferometry
Proceedings of SPIE (July 24 2014)
The ERIS adaptive optics system
Proceedings of SPIE (July 21 2014)
Status of the VLT Nasmyth adaptive optics system (NAOS)
Proceedings of SPIE (July 07 2000)
High-contrast imaging testbed
Proceedings of SPIE (February 08 2008)

Back to Top