PUBLICATIONS OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE104, Page 253-256, https://doi.org/10.69646/aob104p253
PROCEEDINGS of the XX Serbian Astronomical Conference, Belgrade, October 16 - 20, 2023, Edited by Jelena Petrović, Dušan Marčeta and Ana Lalović
Published by: Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia

Abstract. We present observations of the supernova remnant Tycho obtained with OSIRIS at the Gran Telescopio Canaria. With its large field-of-view (4'×4'), spatial sampling of 0.25'' and spectral resolution of 650 kms⁻¹, we covered a large portion of the remnant and resolved the broad Hα component (∼ 1000 km s⁻¹). Previously, we observed the narrow (∼ 10 km s⁻¹) and intermediate (∼ 100 km s⁻¹) component in the same region using GHαFaS on the William Herschel Telescope. Observing all three line components at exactly the samelocations along the filaments and applying shock models give more precise information on the overall conditions in the shock, and enable us to quantify cosmic-ray properties.