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The Balloon-borne Large-Aperture Submillimeter Telescope for polarization: BLAST-pol

Abstract : The Balloon-borne Large Aperture Submillimeter Telescope (BLAST) is a sub-orbital experiment designed to study the process of star formation in local galaxies (including the Milky Way) and in galaxies at cosmological distances. Using a 2m Cassegrain telescope, BLAST images the sky onto a focal plane, which consists of 270 bolometric detectors split between three arrays, observing simultaneously in 30% wide bands, centered at 250, 350, and 500 ?m. The diffraction-limited optical system provides a resolution of 30" at 250 ?m. The pointing system enables raster-like scans with a positional accuracy of ~30", reconstructed to better than 5" rms in postflight analysis. BLAST had two successful flights, from the Arctic in 2005, and from Antarctica in 2006, which provided the first high-resolution and large-area (~0.8-200 deg2) submillimeter surveys at these wavelengths. As a pathfinder for the SPIRE instrument on Herschel, BLAST shares with the ESA satellite similar focal plane technology and scientific motivation. A third flight in 2009 will see the instrument modified to be polarization-sensitive (BLAST-pol). With its unprecedented mapping speed and resolution, BLAST-pol will provide insights into Galactic star-forming nurseries, and give the necessary link between the larger, coarse resolution surveys and the narrow, resolved observations of star-forming structures from space and ground based instruments being commissioned in the next 5 years.
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http://hal.in2p3.fr/in2p3-00330537
Contributor : Simone Lantz <>
Submitted on : Tuesday, October 14, 2008 - 4:39:31 PM
Last modification on : Wednesday, September 23, 2020 - 4:36:57 AM

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G. Marsden, P.A.R. Ade, S. Benton, J. J. Bock, E. L. Chapin, et al.. The Balloon-borne Large-Aperture Submillimeter Telescope for polarization: BLAST-pol. Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, Jun 2008, Marseille, France. ⟨10.1117/12.788413⟩. ⟨in2p3-00330537⟩

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