Paper 13100-37
Paper 13100-37
Image Slicing with a Twist: Testing and Characterising a prototype image slicer for ELT-PCS
17 June 2024 • 15:30 - 15:45 Japan Standard Time | Room G214, North - 2F
Abstract
Integral fields units such as lenslet-arrays, fibre-bundles or image-slicers all suffer from inefficient over-sampling of the spatial PSF unless anamorphic magnifying optics are used, which adds optical aberrations, and reduces optical throughput. In 2014 we presented the novel twisted image slicer concept that produces fully Nyquist-sampled data cubes without the use of anamorphic optics; in 2022 we presented the opto-mechanical design of a prototype twisted image slicer, its nominal performance, and preliminary characterisation results; in this paper we present the full characterisation of the individual image slicer mirror surfaces, and the overall wavefront error of the image slicer, demonstrating the feasibility of the concept and the excellent finish of the mirror surfaces of the prototype image slicer.
Presenter
Univ. of Oxford (United Kingdom)
Matthias Tecza is a senior staff researcher at the University of Oxford's Astrophysics sub-department, specialising in astronomical instrumentation. He is currently instrument scientist for HARMONI, the ELT's first light integral field spectrograph. He graduated in Physics at the Technical University of Munich in 1994 after which joined the group of Prof. Reinhard Genzel for his PhD studies at the Max-Planck-Institute for extraterrestrial Physics (MPE), Germany, where he started the design of the SPIFFI integral field spectrometer (part of the SINFONI instrument at the VLT). Matthias stayed at MPE as Junior Staff Scientist completing the design and construction of SPIFFI, before moving to Oxford in 2004, where he continues to work in the field of astronomical instrumentation. His astronomical research interests lie in the field of interacting & merging galaxies, and the phenomenon of ultra- and hyper-luminous infrared galaxies and the energy source behind their extreme luminosities.