Upgrading the polarisation modulation unit of the Gregor Infrared Spectrograph

Bibcode
2024SPIE13094E..2EQ
DOI
10.1117/12.3018721
Quintero Noda, C.; Collados, M.; Regalado Olivares, S.; Trelles Arjona, J. C.; Bienes, J.; Quintero Nehrkorn, J.; Matta-Gómez, A.; Gómez González, P.; González Pérez, F.; Ruiz de Galarreta, C.; Barreto Cabrera, M.
Bibliographical reference

Ground-based and Airborne Telescopes X

Advertised on:
8
2024
Number of authors
11
IAC number of authors
11
Citations
0
Refereed citations
0
Description
The Gregor Infrared Spectrograph (GRIS) is installed at the Gregor telescope at Observatorio del Teide, Spain. The instrument started observations in 2012 and underwent several upgrades in the following years. Currently, it is experiencing the most significant upgrade so far, which includes, among other things, adding two optical channels to perform simultaneous multi-wavelength observations. One of the elements we need to modify to optimise the performance of the instrument on all the new spectral channels is the Polarisation Module Unit (PMU). In this contribution, we want to present our theoretical analysis, laboratory experiments, and first-light results related to the new version of the PMU. This new version and many of the improved capabilities of the instrument will be offered to the community gradually during 2024.
Type
Non-refereed

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