HARMONI at ELT: development of the high-contrast module
Proceedings of SPIE SPIE, the international society for optics and photonics 12185 (2022) 121854k-121854k-13
HARMONI at ELT: system analysis and performance estimation of the high-contrast module
Proceedings of SPIE SPIE, the international society for optics and photonics 12185 (2022) 121855l-121855l-20
ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction
Proceedings of SPIE SPIE, the international society for optics and photonics 12184 (2022) 1218424-1218424-16
Calibration at elevation of the WEAVE fibre positioner
Ground-based and Airborne Instrumentation for Astronomy IX Society of Photo-optical Instrumentation Engineers 12184 (2022)
Abstract:
WEAVE is the new wide-field spectroscopy facility for the prime focus of the William Herschel Telescope in La Palma, Spain. Its fibre positioner is essential for the accurate placement of the spectrograph’s 960 fibre multiplex. We provide an overview of the recent maintenance, flexure modifications, and calibration measurements conducted at the observatory prior to the final top-end assembly. This work ensures that we have a complete understanding of the positioner’s behaviour as it changes orientation during observations. All fibre systems have been inspected and repaired, and the tumbler structure contains new clamps to stiffen both the internal beam and the retractor support disk onto which the field plates attach. We present the updated metrology procedures4 and results that will be verified on-skyCharacterizing the line spread function in integral field spectrographs from ground-based telescopes
Proceedings of SPIE SPIE, the international society for optics and photonics 12184 (2022) 1218460-1218460-15