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Proceedings Paper

DMD-based multi-object spectrograph on Galileo telescope
Author(s): Frederic Zamkotsian; Paolo Spano; Patrick Lanzoni; William Bon; Marco Riva; Luciano Nicastro; Emilio Molinari; Paolo Di Marcantonio; Filippo Zerbi; Luca Valenziano
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Paper Abstract

Next-generation infrared astronomical instrumentation for ground-based and space telescopes could be based on MOEMS programmable slit masks for multi-object spectroscopy (MOS). This astronomical technique is used extensively to investigate the formation and evolution of galaxies. We propose to develop a 2048x1080 DMD-based MOS instrument to be mounted on the Galileo telescope and called BATMAN. A two-arm instrument has been designed for providing in parallel imaging and spectroscopic capabilities. The two arms with F/4 on the DMD are mounted on a common bench, and an upper bench supports the detectors thanks to two independent hexapods. Very good optical quality on the DMD and the detectors will be reached. ROBIN, a BATMAN demonstrator, has been designed, realized and integrated. It permits to determine the instrument integration procedure, including optics and mechanics integration, alignment procedure and optical quality. First images have been obtained and measured. A DMD pattern manager has been developed in order to generate any slit mask according to the list of objects to be observed; spectra have been generated and measured. Observation strategies will be studied and demonstrated for the scientific optimization strategy over the whole FOV. BATMAN on the sky is of prime importance for characterizing the actual performance of this new family of MOS instruments, as well as investigating the operational procedures on astronomical objects. This instrument will be placed on the Telescopio Nazionale Galileo at the beginning of next year, in 2014.

Paper Details

Date Published: 8 March 2013
PDF: 14 pages
Proc. SPIE 8618, Emerging Digital Micromirror Device Based Systems and Applications V, 86180E (8 March 2013); doi: 10.1117/12.2007294
Show Author Affiliations
Frederic Zamkotsian, Lab d'Astrophysique de Marseille, CNRS (France)
Paolo Spano, INAF - Osservatorio Astronomico di Brera (Italy)
Patrick Lanzoni, Lab d'Astrophysique de Marseille, CNRS (France)
William Bon, Lab d'Astrophysique de Marseille, CNRS (France)
Marco Riva, INAF - Osservatorio Astronomico di Brera (Italy)
Luciano Nicastro, INAF - IASF Bologna (Italy)
Emilio Molinari, INAF - Telescopio Nazionale Galileo (Spain)
Paolo Di Marcantonio, INAF - Osservatorio Astronomico di Trieste (Italy)
Filippo Zerbi, INAF - Osservatorio Astronomico di Brera (Italy)
Luca Valenziano, INAF - IASF Bologna (Italy)

Published in SPIE Proceedings Vol. 8618:
Emerging Digital Micromirror Device Based Systems and Applications V
Michael R. Douglass; Patrick I. Oden, Editor(s)

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