TY  - JOUR
AU  - Alispach, C.
AU  - Araudo, A.
AU  - Balbo, M.
AU  - Beshley, V.
AU  - Blažek, J.
AU  - Borkowski, J.
AU  - Boula, S.
AU  - Bulik, T.
AU  - Cadoux, F.
AU  - Casanova, S.
AU  - Christov, A.
AU  - Chudoba, J.
AU  - Chytka, L.
AU  - Čechvala, P.
AU  - Dědic, P.
AU  - della Volpe, D.
AU  - Favre, Y.
AU  - Garczarczyk, Markus
AU  - Gibaud, L.
AU  - Gieras, T.
AU  - Głowacki, E.
AU  - Hamal, P.
AU  - Heller, M.
AU  - Hrabovský, M.
AU  - Janeček, P.
AU  - Jelínek, M.
AU  - Jílek, V.
AU  - Juryšek, J.
AU  - Karas, V.
AU  - Lacave, B.
AU  - Lyard, E.
AU  - Mach, E.
AU  - Mandát, D.
AU  - Marek, W.
AU  - Michal, S.
AU  - Michałowski, J.
AU  - Miroń, M.
AU  - Moderski, R.
AU  - Montaruli, T.
AU  - Muraczewski, A.
AU  - Muthyala, S. R.
AU  - Müller, A. L.
AU  - Nagai, A.
AU  - Nalewajski, K.
AU  - Neise, D.
AU  - Niemiec, J.
AU  - Nikołajuk, M.
AU  - Novotný, V.
AU  - Ostrowski, M.
AU  - Palatka, M.
AU  - Pech, M.
AU  - Prouza, M.
AU  - Schovanek, P.
AU  - Sliusar, V.
AU  - Stawarz, Ł.
AU  - Sternberger, Ronny
AU  - Stodulska, M.
AU  - Świerblewski, J.
AU  - Świerk, P.
AU  - Štrobl, J.
AU  - Tavernier, T.
AU  - Trávníček, P.
AU  - Pujadas, I. Troyano
AU  - Vícha, J.
AU  - Walter, R.
AU  - Ziętara, K.
TI  - Observation of the Crab Nebula with the Single-Mirror Small-Size Telescope stereoscopic system at low altitude
JO  - Astronomy and astrophysics
VL  - 699
IS  - arXiv:2506.01733
SN  - 0004-6361
CY  - Les Ulis
PB  - EDP Sciences
M1  - PUBDB-2025-05690
M1  - arXiv:2506.01733
SP  - A255 
PY  - 2025
N1  - A&A 699, A255 (2025). 21 pages, 20 figures. Published in Astronomy & Astrophysics
AB  - The Single-Mirror Small-Size Telescope (SST-1M) stereoscopic system is composed of two Imaging Atmospheric Cherenkov Telescopes (IACTs) designed to deliver optimal performance for gamma-ray astronomy in the multi-TeV energy range. It features a 4-m diameter tessellated mirror dish and an innovative SiPM-based camera. Its optical system features a 4-m diameter spherical mirror dish based on the Davies-Cotton design, maintaining a good image quality over a large field of view (FoV), while minimizing optical aberrations. In 2022, two SST-1M telescopes were installed at the Ondřejov Observatory, Czech Republic at an altitude of 510 meters above sea level, collecting data for commissioning and astronomical observations since then. We present the first SST-1M observations of the Crab Nebula, conducted between September 2023 and March 2024 in both mono and stereoscopic modes. During this observation period, 46 hours for the SST-1M-1 and 52 hours for the SST-1M-2 were collected (of which 33 hours were in stereoscopic mode). In this work, we used the Crab Nebula observation to validate the expected performance of the instrument, as evaluated by Monte Carlo (MC) simulations that were carefully tuned to account for instrumental and atmospheric effects. We determined that the energy threshold at the analysis level for the zenith angles below 30° is 1 TeV for mono mode and 1.3 TeV for stereo mode. The energy and angular resolutions were approximately 20
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1051/0004-6361/202555292
UR  - https://bib-pubdb1.desy.de/record/642894
ER  -