http://www.cnr.it/ontology/cnr/individuo/prodotto/ID280416
On-sky tests of an A/R coated silicon grism on board NICS@TNG (Contributo in atti di convegno)
- Type
- Label
- On-sky tests of an A/R coated silicon grism on board NICS@TNG (Contributo in atti di convegno) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Alternative label
Fabrizio Vitali; Vittorio Foglietti; D. Lorenzetti; E. Cianci; F. Ghinassi; A. Harutyunyan; S. Antoniucci; C. Riverol; L. Riverol. (2014)
On-sky tests of an A/R coated silicon grism on board NICS@TNG
in Astronomical Telescopes & Technical Instrumentation, Montréal, Quebec, Canada, 22 - 27 June 2014
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Fabrizio Vitali; Vittorio Foglietti; D. Lorenzetti; E. Cianci; F. Ghinassi; A. Harutyunyan; S. Antoniucci; C. Riverol; L. Riverol. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- Advances in optical and mechanical Technologies for Telescopes and Instrumentation (literal)
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- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- INAF Osservatorio Astronomico di Roma (Italy), CNR Istituto di Struttura della Materia (Italy), Fundación Galileo Galilei Spain. (literal)
- Titolo
- On-sky tests of an A/R coated silicon grism on board NICS@TNG (literal)
- Abstract
- We present the results of our project for the design and construction and on-sky test of silicon grisms. The fabrication of such devices is a complex and critical process involving litho masking, anisotropic etching and direct bonding techniques. After the successful fabrication of the silicon grating, we have optimized the bonding of the grating onto the hypotenuse of a silicon prism to get the final prototype. After some critical phases during the experimentation a silicon grism with 363 grooves/mm and a blaze angle of 14 degrees has been eventually fabricated. The application of an A/R coating on both the surfaces has been the last step in the construction of the silicon grism: this procedure is critical because of the groove geometry of the diffraction grating, whose performace might be compromised by the coating. Then, the grism was inserted in the filter wheel of the Near Infrared camera NICS, at the focal plane of the National Galileo Telescope (TNG), the 3.5 m Italian facility in the Canary Islands (E). The result of the on-sky tests are given in detail. (literal)
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