SHARP -- A near-IR multi-mode spectrograph conceived for MORFEO@ELT

Date Issued
2024
Author(s)
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Conconi, P.
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Mahmoodzadeh, H.
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Lops, G.
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Di Francesco, B.
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Scalera, M.
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Bono, G.
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Dalla Bontà, E.
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Lardo, C.
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Mancini, C.
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Pizzella, A.
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Ricci, F.
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Roccatagliata, V.
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DOI
Abstract
The Extremely Large Telescopes (ELTs), thanks to their large apertures and cutting-edge Multi-Conjugate Adaptive Optics (MCAO) systems, promise to deliver sharper and deeper data even than the JWST. SHARP is a concept study for a near-IR (0.95-2.45 $\mu$m) spectrograph conceived to fully exploit the collecting area and the angular resolution of the upcoming generation of ELTs. In particular, SHARP is designed for the 2nd port of MORFEO@ELT. Composed of a Multi-Object Spectrograph, NEXUS, and a multi-Integral Field Unit, VESPER, MORFEO-SHARP will deliver high angular ($\sim$30 mas) and spectral (R$\simeq$300, 2000, 6000, 17000) resolution, outperforming NIRSpec@JWST (100 mas). SHARP will enable studies of the nearby Universe and the early Universe in unprecedented detail. NEXUS is fed by a configurable slit system deploying up to 30 slits with $\sim$2.4 arcsec length and adjustable width, over a field of about 1.2"$\times$1.2" (35 mas/pix). Each slit is fed by an inversion prism able to rotate by an arbitrary angle the field that can be seen by the slit. VESPER is composed of 12 probes of 1.7"$\times$1.5" each (spaxel 31 mas) probing a field 24"$\times$70". SHARP is conceived to exploit the ELTs apertures reaching the faintest flux and the sharpest angular resolution by joining the sensitivity of NEXUS and the high spatial sampling of VESPER to MORFEO capabilities. This article provides an overview of the scientific design drivers, their solutions, and the resulting optical design of the instrument achieving the required optical performance.
Coverage
Ground-based and Airborne Instrumentation for Astronomy X
All editors
Bryant, Julia J.; Motohara, Kentaro; Vernet, Joël R. D.
Series
Volume
13096
Start page
208
Conferenece
Ground-based and Airborne Instrumentation for Astronomy X
Conferenece place
Yokohama, Japan
Conferenece date
16-22 June, 2024
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2024SPIE13096E..5IS
Rights
open.access
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