8 March 2013 DMD-based multi-object spectrograph on Galileo telescope
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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.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Frederic Zamkotsian, Frederic Zamkotsian, Paolo Spano, Paolo Spano, Patrick Lanzoni, Patrick Lanzoni, William Bon, William Bon, Marco Riva, Marco Riva, Luciano Nicastro, Luciano Nicastro, Emilio Molinari, Emilio Molinari, Paolo Di Marcantonio, Paolo Di Marcantonio, Filippo Zerbi, Filippo Zerbi, Luca Valenziano, Luca Valenziano, } "DMD-based multi-object spectrograph on Galileo telescope", Proc. SPIE 8618, Emerging Digital Micromirror Device Based Systems and Applications V, 86180E (8 March 2013); doi: 10.1117/12.2007294; https://doi.org/10.1117/12.2007294
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