Multi object spectrograph of the Fireball balloon experiment

R. Grange; G. R. Lemaitre; S. Quiret; B. Milliard; S. Pascal; A. Origné

doi:10.1117/12.2056388

24 July 2014 Multi object spectrograph of the Fireball balloon experiment

R. Grange, G. R. Lemaitre, S. Quiret, B. Milliard, S. Pascal, A. Origné

Proceedings Volume 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray; 914430 (2014) https://doi.org/10.1117/12.2056388
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Fireball is a NASA/CNES balloon-borne experiment to study the faint diffuse circumgalactic emission in the ultraviolet around 200 nm. The field of view of the 1 meter diameter parabola is enlarged using a two-mirror field corrector providing 1000 arcmin² at the slit mask. The 0.1 nm resolution Multi Object Spectrograph is based on two identical Schmidt systems sharing a reflective aspherical grating. The aspherization of the grating is achieved using a double replication technique of a metallic deformable matrix. We will present the F/2.5 spectrograph design and the deformable matrix process to obtain the Schmidt grating with elliptical contours.

Citation Download Citation

R. Grange, G. R. Lemaitre, S. Quiret, B. Milliard, S. Pascal, and A. Origné "Multi object spectrograph of the Fireball balloon experiment", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 914430 (24 July 2014); https://doi.org/10.1117/12.2056388

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