Poster + Paper
13 December 2020 HARMONI: First light spectroscopy for the ELT: final design and assembly plan of the spectrographs
Author Affiliations +
Conference Poster
Abstract
HARMONI is the first light visible and near-IR integral field spectrograph for the ELT. It covers a large spectral range from 450nm to 2450nm with resolving powers from R (≡λ/Δλ) 3500 to 18000 and spatial sampling from 60mas to 4mas. It can operate in two Adaptive Optics modes - SCAO (including a High Contrast capability) and LTAO - or with NOAO. The project is preparing for Final Design Reviews. The instrument uses a field splitter and image slicer to divide the field into 4 sub-units, each providing an input slit to one of four nearly identical spectrographs. This proceeding presents the final opto- mechanical design and the AIV plan of the spectrograph units.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Z. Ozer, H. Schnetler, F. T. Bagci, M. Booth, M. Brock, N. Cann, J. Capone, J. Chao Ortiz, G. Dalton, N. Dobson, T. Foster, A. Hidalgo Valadez, J. Kariuki, I. Lewis, A. Lowe, J. Lynn, M. Rodrigues, I. Tosh, F. Clarke, M. Tecza, and N. Thatte "HARMONI: First light spectroscopy for the ELT: final design and assembly plan of the spectrographs", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114472H (13 December 2020); https://doi.org/10.1117/12.2560359
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KEYWORDS
Spectrographs

Iterated function systems

Near infrared

Optomechanical design

Spectral resolution

Spectroscopes

Visible radiation

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