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Proceedings Paper • Open Access

A steep bandpass interference filter with FWHM 11nm centered at 1254nm for studying Lyman Alpha signatures of highly redshifted galaxies
Author(s): A. Hull; U. Brauneck; J. Gallego; N. Cardiel; C. Cabello; R. Guzmán; J. M. Rodríguez-Espinosa; A. Herrero; M. Mas-Hesse; E. Salvador; A. Manrique; A. Marín-Franch

Paper Abstract

The presented new 1% narrowband filter centered at 1254nm with a FWHM of 11nm required and achieved excellent maximum transmission and deep out of band blocking. Magnetron sputtering was used for the filter coating process. The filter was used in the fully cryogenic near-infrared camera CIRCE of the Gran Telescopio Canarias (GTC) Telescope. The goal of the project is to detect very distant galaxies at the dawn of the Universe. These remote and extremely faint galaxies are selected by their Ly-alpha emission. We report on the spectral and interferometric results of the filter, and provide the spectacular first deep image taken with the 10.4m GTC telescope.

Paper Details

Date Published: 12 July 2019
PDF: 10 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 1118087 (12 July 2019); doi: 10.1117/12.2536214
Show Author Affiliations
A. Hull, Univ. of New Mexico (United States)
Kendrick Aerospace Consulting LLC (United States)
U. Brauneck, SCHOTT Suisse SA (Switzerland)
J. Gallego, Univ. Complutense de Madrid (Spain)
N. Cardiel, Univ. Complutense de Madrid (Spain)
C. Cabello, Univ. Complutense de Madrid (Spain)
R. Guzmán, Univ. of Florida (United States)
J. M. Rodríguez-Espinosa, Instituto de Astrofísica de Canarias (Spain)
A. Herrero, Instituto de Astrofísica de Canarias (Spain)
M. Mas-Hesse, Instituto de Astrofísica de Canarias (Spain)
E. Salvador, Univ. de Barcelona (Spain)
A. Manrique, Univ. de Barcelona (Spain)
A. Marín-Franch, Ctr. de Estudios de Física del Cosmos de Aragón (Spain)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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