OCTOCAM: a fast multichannel imager and spectrograph for the 10.4m GTC

Antonio de Ugarte Postigo; Javier Gorosabel; Paolo Spanò; Marco Riva; Ovidio Rabaza; Vincenzo De Caprio; Ronan Cunniffe; Petr Kubánek; Alberto Riva; Martin Jelinek; Michael I. Andersen; Alberto J. Castro-Tirado; Filippo M. Zerbi; Alberto Fernández-Soto

doi:10.1117/12.856912

15 July 2010 OCTOCAM: a fast multichannel imager and spectrograph for the 10.4m GTC

Antonio de Ugarte Postigo, Javier Gorosabel, Paolo Spanò, Marco Riva, Ovidio Rabaza, Vincenzo De Caprio, Ronan Cunniffe, Petr Kubánek, Alberto Riva, Martin Jelinek, Michael I. Andersen, Alberto J. Castro-Tirado, Filippo M. Zerbi, Alberto Fernández-Soto

Author Affiliations +

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77351F (2010) https://doi.org/10.1117/12.856912
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

OCTOCAM is a multi-channel imager and spectrograph that has been proposed for the 10.4m GTC telescope. It will use dichroics to split the incoming light to produce simultaneous observations in 8 different bands, ranging from the ultraviolet to the near-infrared. The imaging mode will have a field of view of 2' x 2' in u, g, r, i, z, J, H and KS bands, whereas the long-slit spectroscopic mode will cover the complete range from 4,000 to 23,000 A with a resolution of 700 - 1,000 (depending on the arm and slit width). An additional mode, using an image slicer, will deliver a spectral resolution of over 3,000. As a further feature, it will use state of the art detectors to reach high readout speeds of the order of tens of milliseconds. In this way, OCTOCAM will be occupying a region of the time resolution - spectral resolution - spectral coverage diagram that is not covered by a single instrument in any other observatory, with an exceptional sensitivity.

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Antonio de Ugarte Postigo, Javier Gorosabel, Paolo Spanò, Marco Riva, Ovidio Rabaza, Vincenzo De Caprio, Ronan Cunniffe, Petr Kubánek, Alberto Riva, Martin Jelinek, Michael I. Andersen, Alberto J. Castro-Tirado, Filippo M. Zerbi, and Alberto Fernández-Soto "OCTOCAM: a fast multichannel imager and spectrograph for the 10.4m GTC", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77351F (15 July 2010); https://doi.org/10.1117/12.856912

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KEYWORDS

Imaging spectroscopy

Ultraviolet radiation

Sensors

Mirrors

Cameras

Spectroscopes

Near infrared

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