Title

Canaricam: A Multimode Mid-Infrared Camera For The Gran Telescopio Canarias

Keywords

BIB detectors; Coronagraphy; Gran Telescopio CANARIAS; Infrared imaging; Polarimetry; Spectroscopy

Abstract

The University of Florida is developing a mid-infrared camera for the 10.4-meter Gran Telescopic CANARIAS. CanariCam has four science modes and two engineering modes, which use the same 320 × 240-pixel, arsenic-doped silicon, blocked-impurity-band detector from Raytheon. Each mode can be remotely selected quickly during an observing sequence. The pixel scale is 0.08 arcsec, resulting in Nyquist sampling of the diffraction-limited point-spread-function at 8 μm, the shortest wavelength for which CanariCam is optimized. The total available field of view for imaging is 26 arcsec × 19 arcsec. The primary science mode will be diffraction-limited imaging using one of several available spectral filters in the 10 μm (8-14 μm) and 20 μm (16-25 μm) atmospheric windows. Any one of four plane gratings can be inserted for low and moderate-resolution (R = 100 - 1300) slit spectroscopy in the 10 and 20-μm regions. Insertion of appropriate field and pupil stops converts the camera into a coronagraph, while insertion of an internal rotating half-wave plate, a field mask, and a Wollaston prism converts the camera into a dual-beam polarimeter.

Publication Date

12-1-2002

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

4841

Issue

2

Number of Pages

913-922

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.458979

Socpus ID

0037620618 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037620618

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