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Proceedings Paper

Near-infrared camera for solar research: a photometric application
Author(s): Marcos Reyes Garcia-Talavera; Enrique Joven-Alvarez; Manuel V. Collados; Jose A. Bonet; Manuel Vazquez; Jose J. Diaz-Garcia; F. Javier Fuentes; Victor Gonzalez-Escalera; Luis Fernando Rodriguez-Ramos; Jose L. Garcia-Herrero
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Paper Abstract

We report here the main characteristics of a near IR camera devoted to astrophysical solar research, which has been developed by the Instituto de Astrofisica de Canarias (IAC). The system is now being used for photometric and spectroscopic applications, and it will also be used for spectropolarimetry in the near future. The first application is described below in detail. The IACs IR camera is based on a Rockwell 256 X 256 HgCdTe NICMOS3 array, sensitive from 1 to 2.5 microns. The necessary cooling system is a LN2- cryostat, designed and built by IR labs under out requirements. The main electronics are the standard VME- based, FPGA programmable MCE-3 system, also developed by IR labs. We have implemented different readout schemes to improve sped, reduce noise and avoid seeing effects, taking into account each specific application. Data are transferred via fiber optics to a control unit, which re-send them to the main data acquisition system. Several acquisition modes to select the best images have been implemented, and a real- time data processing is available, the entire camera has been characterized and calibrated, and the main radiometric parameters given. Preliminary test in spectroscopic observations have been made in the German Towers at the Observatorio del Teide in Tenerife, Spain, and a series of photometric measurements performed in the Swedish Solar Telescope, at the Observatorio del Roque de los Muchachos in La Palma, Spain. As examples, some scientific results are also presented.

Paper Details

Date Published: 7 September 1998
PDF: 12 pages
Proc. SPIE 3410, Advanced Focal Plane Arrays and Electronic Cameras II, (7 September 1998); doi: 10.1117/12.324005
Show Author Affiliations
Marcos Reyes Garcia-Talavera, Instituto de Astrofisica de Canarias (Spain)
Enrique Joven-Alvarez, Instituto de Astrofisica de Canarias (Spain)
Manuel V. Collados, Instituto de Astrofisica de Canarias (Spain)
Jose A. Bonet, Instituto de Astrofisica de Canarias (Spain)
Manuel Vazquez, Instituto de Astrofisica de Canarias (Spain)
Jose J. Diaz-Garcia, Instituto de Astrofisica de Canarias (Spain)
F. Javier Fuentes, Instituto de Astrofisica de Canarias (Spain)
Victor Gonzalez-Escalera, Instituto de Astrofisica de Canarias (Spain)
Luis Fernando Rodriguez-Ramos, Instituto de Astrofisica de Canarias (Spain)
Jose L. Garcia-Herrero, Instituto de Astrofisica de Canarias (Spain)


Published in SPIE Proceedings Vol. 3410:
Advanced Focal Plane Arrays and Electronic Cameras II
Thierry M. Bernard, Editor(s)

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