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Science with FORCAST, the mid-IR imager and grism spectrometer for SOFIA (Conference Presentation)
Author(s): L. Andrew Helton
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Paper Abstract

The Faint Object infraRed CAmera for the SOFIA Telescope (FORCAST) is a dual-channel mid-infrared camera and spectrograph sensitive from 5-40 µm. The Short Wave Camera (SWC) uses a Si:As blocked-impurity band (BIB) array optimized for λ < 25 µm, while the Long Wave Camera's (LWC) Si:Sb BIB array is optimized for λ < 25 µm. Observations can be made through either of the two channels individually or, by use of a dichroic mirror, with both channels simultaneously across most of the range. Spectroscopy is also possible using a suite of four grisms, which provide coverage from 5-40 µm with a low spectral resolution of R = λ =Δλ ~ 200. Since it’s commissioning FORCAST has made a number of exciting observations, including the discovery of dust that survived the reverse shock in the supernova remnant Sgr A East, the identification of an asteroid belt analog surrounding ε Eridani, and some of the highest resolution mid-IR observations of the transient Galactic circumnuclear ring to date. Here I present a selection of recent SOFIA FORCAST observations and discuss their relevance to a variety of today’s most pressing astronomical topics.

Paper Details

Date Published: 12 December 2016
PDF: 1 pages
Proc. SPIE 9973, Infrared Remote Sensing and Instrumentation XXIV, 99730P (12 December 2016); doi: 10.1117/12.2238594
Show Author Affiliations
L. Andrew Helton, USRA / SOFIA (United States)


Published in SPIE Proceedings Vol. 9973:
Infrared Remote Sensing and Instrumentation XXIV
Marija Strojnik, Editor(s)

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Science with FORCAST, the mid-IR imager and grism spectrometer for SOFIA (Conference Presentation)



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