Issue |
A&A
Volume 679, November 2023
|
|
---|---|---|
Article Number | A90 | |
Number of page(s) | 12 | |
Section | Astronomical instrumentation | |
DOI | https://doi.org/10.1051/0004-6361/202347128 | |
Published online | 16 November 2023 |
Star tracking for pointing determination of Imaging Atmospheric Cherenkov Telescopes
Application to the Large-Sized Telescope of the Cherenkov Telescope Array
1
Department of Physics, Tokai University,
4-1-1, Kita-Kaname, Hiratsuka,
Kanagawa
259-1292, Japan
2
Institute for Cosmic Ray Research, University of Tokyo,
5-1-5, Kashiwa-no-ha, Kashiwa,
Chiba
277-8582, Japan
3
Departament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de Barcelona, IEEC-UB,
Martí i Franquès 1,
08028,
Barcelona, Spain
4
Instituto de Astrofísica de Andalucía-CSIC,
Glorieta de la Astronomía s/n,
18008
Granada, Spain
5
Grupo de Electronica, Universidad Complutense de Madrid,
Av. Complutense s/n,
28040
Madrid, Spain
6
INAF - Osservatorio Astronomico di Roma,
Via di Frascati 33,
00040
Monteporzio Catone, Italy
7
INFN Sezione di Napoli,
Via Cintia, ed. G,
80126
Napoli, Italy
8
Max-Planck-Institut für Physik,
Föhringer Ring 6,
80805
München, Germany
9
INFN Sezione di Padova and Università degli Studi di Padova,
Via Marzolo 8,
35131
Padova, Italy
10
Institut de Fisica d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology,
Campus UAB,
08193
Bellaterra (Barcelona), Spain
11
Univ. Savoie Mont Blanc, CNRS, Laboratoire d’Annecy de Physique des Particules - IN2P3,
74000
Annecy, France
12
Universität Hamburg, Institut für Experimentalphysik,
Luruper Chaussee 149,
22761
Hamburg, Germany
13
Graduate School of Science, University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo
113-0033, Japan
14
EMFTEL department and IPARCOS, Universidad Complutense de Madrid,
Plaza de Ciencias, 1. Ciudad Universitaria,
28040
Madrid, Spain
15
INAF – Osservatorio di Astrofísica e Scienza dello spazio di Bologna,
Via Piero Gobetti 93/3,
40129
Bologna, Italy
16
Centro Brasileiro de Pesquisas Físicas,
Rua Xavier Sigaud 150,
RJ 22290-180,
Rio de Janeiro, Brazil
17
Instituto de Astrofísica de Canarias and Departamento de Astrofísica, Universidad de La Laguna,
C. Vía Láctea, s/n,
38205
La Laguna, Santa Cruz de Tenerife, Spain
18
CIEMAT,
Avda. Complutense 40,
28040
Madrid, Spain
19
Department of Physics, TU Dortmund University,
Otto-Hahn-Str. 4,
44227
Dortmund, Germany
20
INFN Sezione di Bari and Politecnico di Bari,
via Orabona 4,
70124
Bari, Italy
21
INAF – Osservatorio Astronomico di Brera,
Via Brera 28,
20121
Milano, Italy
22
INFN Sezione di Trieste and Università degli studi di Udine,
via delle scienze 206,
33100
Udine, Italy
23
University of Geneva - Département de physique nucléaire et corpusculaire,
24 Quai Ernest Ansernet,
1211
Genève 4, Switzerland
24
INFN Sezione di Catania,
Via S. Sofia 64,
95123
Catania, Italy
25
INAF - Istituto di Astrofísica e Planetologia Spaziali (IAPS),
Via del Fosso del Cavaliere 100,
00133
Roma, Italy
26
Aix-Marseille Univ, CNRS/IN2P3, CPPM,
Marseille, France
27
INFN Sezione di Torino,
Via P. Giuria 1,
10125
Torino, Italy
28
Palacky University Olomouc, Faculty of Science,
17. listopadu 1192/12,
771 46
Olomouc, Czech Republic
29
Port d’Informació Científica, Edifici D, Carrer de l’Albareda,
08193
Bellaterrra (Cerdanyola del Vallès), Spain
30
INFN Sezione di Bari and Università di Bari,
via Orabona 4,
70126
Bari, Italy
31
University of Rijeka, Department of Physics,
Radmile Matejcic 2,
51000
Rijeka, Croatia
32
Institute for Theoretical Physics and Astrophysics, Universität Würzburg,
Campus Hubland Nord, Emil-Fischer-Str. 31,
97074
Würzburg, Germany
33
Institut für Theoretische Physik, Lehrstuhl IV: Plasma-Astroteilchenphysik, Ruhr-Universität Bochum,
Universitätsstraße 150,
44801
Bochum, Germany
34
INFN Sezione di Roma La Sapienza,
P.le Aldo Moro 2,
00185
Rome, Italy
35
ILANCE, CNRS - University of Tokyo International Research Laboratory, University of Tokyo,
5-1-5 Kashiwa-no-Ha Kashiwa City,
Chiba
277-8582, Japan
36
Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University,
1-3-1 Kagamiyama, Higashi-Hiroshima City,
Hiroshima,
739-8526, Japan
37
INFN Sezione di Roma Tor Vergata,
Via della Ricerca Scientifica 1,
00133
Rome, Italy
38
Faculty of Physics and Applied Informatics, University of Lodz,
ul. Pomorska 149-153,
90-236
Lodz, Poland
39
University of Split, FESB,
R. Boškovića 32,
21000
Split, Croatia
40
Department of Physics, Yamagata University,
1-4-12 Kojirakawamachi,
Yamagata-shi,
990-8560, Japan
41
Josip Juraj Strossmayer University of Osijek, Department of Physics,
Trg Ljudevita Gaja 6,
31000
Osijek, Croatia
42
INFN Dipartimento di Scienze Fisiche e Chimiche - Università degli Studi dell’Aquila and Gran Sasso Science Institute,
Via Vetoio 1, Viale Crispi 7,
67100
L’Aquila, Italy
43
Kitashirakawa Oiwakecho, Sakyo Ward,
Kyoto,
606-8502, Japan
44
FZU - Institute of Physics of the Czech Academy of Sciences,
Na Slovance 1999/2,
182 21
Praha 8, Czech Republic
45
Astronomical Institute of the Czech Academy of Sciences,
Bocni II 1401,
14100
Prague, Czech Republic
46
Faculty of Science, Ibaraki University,
2 Chome-1-1 Bunkyo, Mito,
Ibaraki
310-0056, Japan
47
Faculty of Science and Engineering, Waseda University,
3 Chome-4-1 Okubo, Shinjuku City,
Tokyo
169-0072, Japan
48
Institute of Particle and Nuclear Studies, KEK (High Energy Accelerator Research Organization),
1-1 Oho,
Tsukuba,
305-0801, Japan
49
INFN Sezione di Trieste and Università degli Studi di Trieste,
Via Valerio 2 I,
34127
Trieste, Italy
50
INFN and Università degli Studi di Siena, Dipartimento di Scienze Fisiche, della Terra e dell’Ambiente (DSFTA),
Sezione di Fisica, Via Roma 56,
53100
Siena, Italy
51
Escuela Politécnica Superior de Jaén, Universidad de Jaén,
Campus Las Lagunillas s/n, Edif. A3,
23071
Jaén, Spain
52
Saha Institute of Nuclear Physics,
Sector 1, AF Block, Bidhan Nagar, Bidhannagar,
Kolkata, West Bengal
700064, India
53
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences,
72 boul. Tsarigradsko chaussee,
1784
Sofia, Bulgaria
54
Dipartimento di Fisica e Chimica ’E. Segrè’ Università degli Studi di Palermo,
via delle Scienze,
90128
Palermo, Italy
55
Hiroshima Astrophysical Science Center, Hiroshima University
1-3-1 Kagamiyama, Higashi-Hiroshima,
Hiroshima
739-8526, Japan
56
School of Allied Health Sciences, Kitasato University,
Sagamihara, Kanagawa
228-8555, Japan
57
RIKEN, Institute of Physical and Chemical Research,
2-1 Hirosawa, Wako,
Saitama,
351-0198, Japan
58
Charles University, Institute of Particle and Nuclear Physics,
V Holešovičkách 2,
180 00
Prague 8, Czech Republic
59
Division of Physics and Astronomy, Graduate School of Science, Kyoto University,
Sakyo-ku, Kyoto
606-8502, Japan
60
Institute for Space-Earth Environmental Research, Nagoya University,
Chikusa-ku, Nagoya
464-8601, Japan
61
Kobayashi-Maskawa Institute (KMI) for the Origin of Particles and the Universe, Nagoya University,
Chikusa-ku, Nagoya
464-8602, Japan
62
Graduate School of Technology, Industrial and Social Sciences,
63 Tokushima University, 2-1 Minamijosanjima,
Tokushima,
770-8506, Japan
63
INFN Dipartimento di Scienze Fisiche e Chimiche - Università degli Studi dell’Aquila and Gran Sasso Science Institute,
Via Vetoio 1, Viale Crispi 7,
67100
L’Aquila, Italy
64
Department of Physical Sciences, Aoyama Gakuin University, Fuchinobe,
Sagamihara, Kanagawa
252-5258, Japan
65
IRFU, CEA, Université Paris-Saclay,
Bât. 141,
91191
Gif-sur-Yvette, France
66
Department of Astronomy, University of Geneva,
Chemin d’Ecogia 16,
1290
Versoix, Switzerland
67
Graduate School of Science and Engineering, Saitama University,
255 Simo-Ohkubo, Sakura-ku, Saitama city,
Saitama
338-8570, Japan
68
Institute of Space Sciences (ICE, CSIC), and Institut d’Estudis Espacials de Catalunya (IEEC), and Institució Catalana de Recerca I Estudis Avançats (ICREA),
Campus UAB, Carrer de Can Magrans, s/n,
08193
Bellatera, Spain
69
Dipartimento di Fisica - Universitá degli Studi di Torino,
Via Pietro Giuria 1,
10125
Torino, Italy
70
Department of Physics, Konan University,
8-9-1 Okamoto,
Higashinada-ku Kobe
658-8501, Japan
Received:
8
June
2023
Accepted:
31
July
2023
We present a novel approach to the determination of the pointing of Imaging Atmospheric Cherenkov Telescopes (IACTs) using the trajectories of the stars in their camera’s field of view. The method starts with the reconstruction of the star positions from the Cherenkov camera data, taking into account the point spread function of the telescope, to achieve a satisfying reconstruction accuracy of the pointing position. A simultaneous fit of all reconstructed star trajectories is then performed with the orthogonal distance regression (ODR) method. ODR allows us to correctly include the star position uncertainties and use the time as an independent variable. Having the time as an independent variable in the fit makes it better suitable for various star trajectories. This method can be applied to any IACT and requires neither specific hardware nor interface or special data-taking mode. In this paper, we use the Large-Sized Telescope (LST) data to validate it as a useful tool to improve the determination of the pointing direction during regular data taking. The simulation studies show that the accuracy and precision of the method are comparable with the design requirements on the pointing accuracy of the LST (≤14″). With the typical LST event acquisition rate of 10 kHz, the method can achieve up to 50 Hz pointing monitoring rate, compared to 𝒪(1) Hz achievable with standard techniques. The application of the method to the LST prototype (LST-1) commissioning data shows the stable pointing performance of the telescope.
Key words: astroparticle physics / instrumentation: high angular resolution / methods: data analysis / techniques: high angular resolution / techniques: image processing / telescopes
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is published in open access under the Subscribe to Open model. Subscribe to A&A to support open access publication.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.