Design of a custom wideband camera for MISTRAL imager-spectrograph

Eduard R. Muslimov; Jerome Schmitt; Christophe Adami; Michel Dennefeld; Marc Ferrari

doi:10.1117/12.3019218

11 September 2024 Design of a custom wideband camera for MISTRAL imager-spectrograph

Eduard R. Muslimov, Jerome Schmitt, Christophe Adami, Michel Dennefeld, Marc Ferrari

Proceedings Volume 13094, Ground-based and Airborne Telescopes X; 130944J (2024) https://doi.org/10.1117/12.3019218
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

MISTRAL is a visible and near infrared imager and spectrograph working with the 1.93m telescope at L’Observatoire de Haute-Provence. The goal of the present project is to design and build one custom lens covering the entire working band 370 − 1000nm with an enhanced throughput and resolution. The proposed design has the focal length of 100mm with f/# = 2 and consists of 5 lenses with 2 aspheres. It is capable to work in spectroscopy or direct imaging mode with the spectral resolving power up to R590 − 1675 or energy concentration of 84% within ±1pix. The throughput varies from 79to98% in the main band of 400-1000nm with a commercial AR coating and could be yet improved with a custom one. We also demonstrate that with this image quality can be maintained in a ≤ 10% margin with practically reachable tolerances.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Eduard R. Muslimov, Jerome Schmitt, Christophe Adami, Michel Dennefeld, and Marc Ferrari "Design of a custom wideband camera for MISTRAL imager-spectrograph", Proc. SPIE 13094, Ground-based and Airborne Telescopes X, 130944J (11 September 2024); https://doi.org/10.1117/12.3019218

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