aluminum mirror; Ariel mission; Cassegrain; cryogenic telescope; Infrared Telescope; space telescope; Aluminium mirrors; Atmospheric remote sensing; Atmospheric remote-sensing infrared exoplanet large survey mission; Cryogenic telescope; Exo-planets; Infrared telescopes; Large surveys; Mounting systems; Optical Bench; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] Ariel (Atmospheric Remote-Sensing Infrared Exoplanet Large Survey) is the adopted M4 mission in the framework of the ESA “Cosmic Vision” program. Its purpose is to conduct a survey of the atmospheres of known exoplanets through transit spectroscopy. Launch is scheduled for 2029. Ariel scientific payload consists of an off-axis, unobscured Cassegrain telescope feeding a set of photometers and spectrometers in the waveband between 0.5 and 7.8 µm and operating at cryogenic temperatures (55 K). The Telescope Assembly is based on an innovative fully-aluminum design to tolerate thermal variations avoiding impacts on the optical performance; it consists of a primary parabolic mirror with an elliptical aperture of 1.1 m of major axis, followed by a hyperbolic secondary that is mounted on a refocusing system, a parabolic re-collimating tertiary and a flat folding mirror directing the output beam parallel to the optical bench. An innovative mounting system based on 3 flexure-hinges supports the primary mirror on one side of the optical bench. The instrument bay on the other side of the optical bench houses the Ariel IR Spectrometer (AIRS) and the Fine Guidance System/NIR Spectrometer (FGS/NIRSpec). The Telescope Assembly is in phase B2 towards the Preliminary Design Review to start the fabrication of the structural model; some components, i.e., the primary mirror, its mounting system and the refocusing mechanism, are undergoing further development activities to increase their readiness level. This paper describes the design and development of the ARIEL Telescope Assembly.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Pace, Emanuele; Dip. Fisica ed Astronomia, Università di Firenze, Firenze, Italy ; INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy
Tozzi, Andrea; INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy
Abreu, Manuel Adler; University of Lisbon, Institute of Astrophysics and Space Sciences, Lisboa, Portugal
Alonso, Gustavo; Universidad Politécnica de Madrid, Madrid, Spain
Barroqueiro, Bruno; Active Space Technologies S.A., Coimbra, Portugal
Bianucci, Giovanni; Media Lario s.r.l., Lecco, Italy
Bocchieri, Andrea; Dip. Fisica, La Sapienza Università di Roma, Roma, Italy
Brucalassi, Anna; INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy
Burresi, Matteo; Leonardo S.p.A., Firenze, Italy
Canestrari, Rodolfo; INAF-IASF, Palermo, Italy
Carbonaro, Luca; INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy
Castanheira, João; Active Space Technologies S.A., Coimbra, Portugal
Chioetto, Paolo; Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”, Padova, Italy ; INAF-Osservatorio Astronomico di Padova, Padova, Italy ; CNR-Istituto di Fotonica e Nanotecnologie di Padova, Padova, Italy
Ferrer, Josep Colomé; Institut d'Estudis Espacials de Catalunya, Barcelona, Spain
Compostizo, Carlos; Sener Aerospacial, Ctra. Campo Real, Madrid, Spain
Cortecchia, Fausto; INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Bologna, Italy
D'Anca, Fabio; INAF-Osservatorio Astronomico di Palermo, Palermo, Italy
Del Vecchio, Ciro; INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy
Diolaiti, Emiliano; INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Bologna, Italy
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave
Event place :
Montreal, Can
Event date :
17-07-2022 => 22-07-2022
Audience :
International
Main work title :
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave
Editor :
Coyle, Laura E.
Publisher :
SPIE
ISBN/EAN :
978-1-5106-5341-2
Funders :
The Society of Photo-Optical Instrumentation Engineers (SPIE)
Funding text :
This activity has been developed under the Implementation Agreement n. 2021-5-HH.0 “Italian Participation to Ariel mission phase B2/C” between the Italian Space Agency (ASI) and the National Institute for Astrophysics (INAF) and under the ASI contract n. 2021-21-I.0 “ARIEL TA Phase B Industrial Activities” to Leonardo S.p.A and Media Lario s.r.l. companies.
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