The Balloon-borne Large Aperture Submillimeter Telescope: BLAST

Details The Balloon-borne Large Aperture Submillimeter Telescope: BLAST The Balloon-borne Large Aperture Submillimeter Telescope: BLAST

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21111601s&link_type=abstract

American Astronomical Society, AAS Meeting #211, #116.01; Bulletin of the American Astronomical Society, Vol. 39, p.945

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The Balloon-borne Large Aperture Submillimeter Telescope (BLAST) is a sub-orbital survey-experiment designed to study the evolutionary history and processes of star formation in local galaxies (including the Milky Way) and galaxies at cosmological distances. The BLAST continuum camera, which consists of 270 detectors distributed between 3 arrays, observes simultaneously in broad-band (30%) spectral-windows at 250µm, 350µm, and 500µm. The optical design is based on a 2m diameter Cassegrain telescope, providing a diffraction-limited resolution of 30" at 250µm. The gondola pointing system enables raster-like maps of arbitrary geometry, with a repeatable positional accuracy of 30"; post-flight pointing reconstruction to < 5" rms is also achieved. The on-board telescope control software permits autonomous execution of a pre-selected set of maps, with the option of manual intervention. Since a test-flight in 2003, BLAST has made two scientifically productive long-duration balloon flights: a 100-hour flight from ESRANGE (Kiruna), Sweden to Victoria Island, northern Canada in June 2005, and a 250-hour, circumpolar-flight from McMurdo Station, Antarctica, in December 2006.

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