SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process

Delphine Dumas; Jean Michel Huet; Jean Laurent Dournaux; Philippe Laporte; Cameron Rulten; Jurgen Schmoll; Hélène Sol; Frédéric Sayède; Patrice Micolon; Jean François Glicenstein; Bernard Peyaud

doi:10.1117/12.2055077

SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process

Delphine Dumas
, Jean Michel Huet
, Jean Laurent Dournaux
, Philippe Laporte
, Cameron Rulten
, Jurgen Schmoll
, Hélène Sol
, Frédéric Sayède
, Patrice Micolon
, Jean François Glicenstein
, Bernard Peyaud

Physics and Astronomy (Twin Cities)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

The Observatoire de Paris is constructing a prototype Small-Sized Telescope (SST) for the Cherenkov Telescope Array (CTA), named SST-GATE, based on the dual-mirror Schwarzschild-Couder optical design. Considering the mirrors size and its specific curvature and the optical requirements for the Cherenkov imaging telescope, a non-conventional process has been used for designing and manufacturing the mirrors of the SST-GATE prototype. Based on machining, polishing and coating of aluminium bulk samples, this process has been validated by simulation and tests that will be detailed in this paper after a discussion on the Schwarzschild-Couder optical design which so far has never been used to design ground based telescopes. Even if the SST-GATE is a prototype for small size telescopes of the CTA array, the primary mirror of the telescope is 4 meters diameter, and it has to be segmented. Due to the dual-mirror configuration, the alignment is a complex task that needs a well defined and precise process that will be discussed in this paper.

Original language	English (US)
Title of host publication	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Editors	Colin R. Cunningham, Ramon Navarro, Allison A. Barto
Publisher	SPIE
ISBN (Electronic)	9780819496195
DOIs	https://doi.org/10.1117/12.2055077
State	Published - 2014
Event	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation - Montreal, Canada Duration: Jun 23 2014 → Jun 27 2014

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9151
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Country/Territory	Canada
City	Montreal
Period	6/23/14 → 6/27/14

Bibliographical note

Publisher Copyright:
© 2014 SPIE.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

CTA
Cherenkov astronomy
Dual-mirror design
Gamma-ray astronomy
Mirror manufacturing
Schwarzschild-Couder
Segmented mirrors
Small Size Telescope

Publisher link

10.1117/12.2055077

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Dumas, D., Huet, J. M., Dournaux, J. L., Laporte, P., Rulten, C., Schmoll, J., Sol, H., Sayède, F., Micolon, P., Glicenstein, J. F., & Peyaud, B. (2014). SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process. In C. R. Cunningham, R. Navarro, & A. A. Barto (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation Article 91512U (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9151). SPIE. https://doi.org/10.1117/12.2055077

SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process. / Dumas, Delphine; Huet, Jean Michel; Dournaux, Jean Laurent et al.
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation. ed. / Colin R. Cunningham; Ramon Navarro; Allison A. Barto. SPIE, 2014. 91512U (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9151).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Dumas, D, Huet, JM, Dournaux, JL, Laporte, P, Rulten, C, Schmoll, J, Sol, H, Sayède, F, Micolon, P, Glicenstein, JF & Peyaud, B 2014, SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process. in CR Cunningham, R Navarro & AA Barto (eds), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation., 91512U, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9151, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, Montreal, Canada, 6/23/14. https://doi.org/10.1117/12.2055077

Dumas D, Huet JM, Dournaux JL, Laporte P, Rulten C, Schmoll J et al. SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process. In Cunningham CR, Navarro R, Barto AA, editors, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation. SPIE. 2014. 91512U. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2055077

Dumas, Delphine ; Huet, Jean Michel ; Dournaux, Jean Laurent et al. / SST dual-mirror telescope for Cherenkov Telescope Array : An innovative mirror manufacturing process. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation. editor / Colin R. Cunningham ; Ramon Navarro ; Allison A. Barto. SPIE, 2014. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The Observatoire de Paris is constructing a prototype Small-Sized Telescope (SST) for the Cherenkov Telescope Array (CTA), named SST-GATE, based on the dual-mirror Schwarzschild-Couder optical design. Considering the mirrors size and its specific curvature and the optical requirements for the Cherenkov imaging telescope, a non-conventional process has been used for designing and manufacturing the mirrors of the SST-GATE prototype. Based on machining, polishing and coating of aluminium bulk samples, this process has been validated by simulation and tests that will be detailed in this paper after a discussion on the Schwarzschild-Couder optical design which so far has never been used to design ground based telescopes. Even if the SST-GATE is a prototype for small size telescopes of the CTA array, the primary mirror of the telescope is 4 meters diameter, and it has to be segmented. Due to the dual-mirror configuration, the alignment is a complex task that needs a well defined and precise process that will be discussed in this paper.",

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AB - The Observatoire de Paris is constructing a prototype Small-Sized Telescope (SST) for the Cherenkov Telescope Array (CTA), named SST-GATE, based on the dual-mirror Schwarzschild-Couder optical design. Considering the mirrors size and its specific curvature and the optical requirements for the Cherenkov imaging telescope, a non-conventional process has been used for designing and manufacturing the mirrors of the SST-GATE prototype. Based on machining, polishing and coating of aluminium bulk samples, this process has been validated by simulation and tests that will be detailed in this paper after a discussion on the Schwarzschild-Couder optical design which so far has never been used to design ground based telescopes. Even if the SST-GATE is a prototype for small size telescopes of the CTA array, the primary mirror of the telescope is 4 meters diameter, and it has to be segmented. Due to the dual-mirror configuration, the alignment is a complex task that needs a well defined and precise process that will be discussed in this paper.

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SST dual-mirror telescope for Cherenkov Telescope Array: An innovative mirror manufacturing process

Abstract

Publication series

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Bibliographical note

UN SDGs

Keywords

Publisher link

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