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30 January 2003 VPHG in the cold
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Abstract
The need of new generation dispersing elements with higher throughput and with higher dispersion capabilities has now met a widely shared answer in the technology of Volume Phase Holographic Gratings (VPHG). Our group is increasingly involved in the design and realization of VPHGs both for edge basic research, testing different manufacturers, sizes and resolutions, and for existing instruments upgrades, letting observing astronomers to take advantage of new possibilities with higher performances in their common use instrumentations. In Asiago Observatory, we refurbished the AFOSC camera and spectrograph, whose twins are spread all over the world, from Chilean based ESO-Danish telescope, to Bologna (Italy) South Africa and China. In our laboratory we reproduced the cooled environment of infrared cameras, obtaining the first proofs of the good behavior of VPHG in future IR spectrograph designs.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrea Bianco, Emilio Molinari, Paolo Conconi, Giuseppe Crimi, Enrico Giro, Claudio Pernechele, and Filippo Maria Zerbi "VPHG in the cold", Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003); https://doi.org/10.1117/12.456698
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