Title

First test results from FORCAST: The facility mid-IR camera for SOFIA

Document Type

Conference Proceeding

Publication Date

12-24-2004

Abstract

We report laboratory tests and development progress for the Faint Object Infrared Camera for the SOFIA Telescope (FORCAST). FORCAST is a two-channel camera with selectable filters for continuum and line imaging in the 5-40 micron wavelength region. Simultaneous imaging will be possible in the two channels: 5-25 microns using a Si:As 256×256 blocked impurity band (BIB) detector array, and 25-40 microns using a Si:Sb BIB. FORCAST will sample 0.75 arcseconds per pixel allowing a 3.2′×3.2′ instantaneous field-of-view in both channels simultaneously. Imaging will be diffraction limited for lambda > 15 microns on the SOFIA telescope. Since FORCAST operates in the wavelength range where the seeing is best from SOFIA, it will provide the highest spatial resolution possible from the airborne observatory. In addition to imaging, the FORCAST optical design provides for a simple upgrade to include spectroscopic observations using grisms mounted in the filter wheels. FORCAST will be available for facility testing and astronomical observations at SOFIA first (f)light.

Publication Name

Proceedings of SPIE - The International Society for Optical Engineering

Volume Number

5492

First Page

1086

Last Page

1093

Issue Number

PART 2

DOI

10.1117/12.552333

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