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Optical design studies for national large optical-IR telescope

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Abstract

A 10–12 m class national large optical-IR telescope (NLOT) is envisaged to meet the growing scientific requirements in astronomy and astrophysics. Telescopes of such dimensions can only be made by segmenting the primary mirror, as it eases a more prominent primary mirror’s fabrication, transportation, operation, and maintenance process. This paper presents the various optical designs analyzed for NLOT that can be fabricated using the India TMT Optics Fabrication Facility (ITOFF) at the Centre for Research and Education in Science and Technology (CREST) campus. We present the primary mirror segmentation details, its ideal optical performance, and study each design’s advantages and technical complexities. Based on the above analysis, we have narrowed it down to an optimal design, and its performance analysis is also discussed.

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Acknowledgements

The authors express gratitude for valuable inputs from members of IIA’s optics division, with special thanks to Ismail Jabillulah for technical assistance with Zemax and Manoj Kumar Gubbala for support.

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Authors and Affiliations

  1. Department of Physics and Electronics, Christ University, Bengaluru, 560029, India

    Varun Padikal, Amirul Hasan, Vineeth Valsan, S. Sriram & Athul Kurian

  2. Optics and Photonics Division, Indian Institute of Astrophysics, Koramangala, Bengaluru, 560034, India

    Amirul Hasan, S. Sriram, Vishnu C. Unni, Alikhan Basheer, Pramod Panchal, Maheswar Gopinathan, B. S. Remya & Totan Chand

  3. Department of Biosciences, Newcastle University, Newcastle, NE1 7RU, UK

    Varun Padikal

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  1. Varun Padikal
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Correspondence to Varun Padikal.

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Padikal, V., Hasan, A., Valsan, V. et al. Optical design studies for national large optical-IR telescope. J Astrophys Astron 45, 8 (2024). https://doi.org/10.1007/s12036-024-09995-7

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