HARMONI: the ELT's First-Light Near-infrared and Visible Integral Field Spectrograph
Abstract
The High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI) is the visible and near-infrared (NIR), adaptive-optics-assisted, integral field spectrograph for ESO's Extremely Large Telescope (ELT). It will have both a single-conjugate adaptive optics (SCAO) mode (using a single bright natural guide star) and a laser tomographic adaptive optics (LTAO) mode (using multiple laser guide stars), providing near diffraction-limited hyper-spectral imaging. A unique high-contrast adaptive optics with high performance and good sky coverage, respectively (AO) capability has recently been added for exoplanet characterisation. A large detector complement of eight HAWAII-4RG arrays, four choices of spaxel scale, and 11 grating choices with resolving powers ranging from R ~ 3000 to R ~ 17 000 make HARMONI a very versatile instrument that can cater to a wide range of observing programmes.
- Publication:
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The Messenger
- Pub Date:
- March 2021
- DOI:
- 10.18727/0722-6691/5215
- arXiv:
- arXiv:2103.11215
- Bibcode:
- 2021Msngr.182....7T
- Keywords:
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- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- As published in the ESO Messenger