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| BLAST conducts unique galactic surveys |
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BLAST being launched in Kiruna, Sweden, in June 2005.
(Photo: D. Wiebe, Physics Department, University of Toronto)
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In June 2005, a team of researchers from Canada, the USA, the UK and Mexico has launched BLAST, a balloon-borne telescope. During the flight that lasted 5 days, the balloon covered the distance between Kiruna, Sweden, and Inuvik, in the Canadian North.
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BLAST being carried to
its
launch pad
(Photo: University of
British Columbia)
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BLAST on the launch pad
(Photo: University of Toronto)
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During its flight, the BLAST telescope (for Balloon-borne
Large Aperture Sub-millimetre Telescope) probed the heavens to identify starburst galaxies—a special kind of galaxy—enabling researchers to study the formation and evolution of stars, galaxies and star clusters to find answers to cosmological questions.
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What is cosmology?
Cosmology is the science that studies the physical laws of the
universe.
Cosmologists try to answer many questions on the formation of the
universe,
the causes of space phenomena or, again, the source of such energies as the
dark matter. What particles made it possible for all structures to form?
When did the first matter appear, putting an end to the Dark
Age of the
cosmos?
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Core of a galaxy as seen by the Hubble Space Telescope
(Image: ESA and NASA)
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Technology testbed
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BLAST's mirror is two metres wide
(Photo: University of British Columbia)
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A second research flight is planned for 2007. In addition to its scientific mission, BLAST is to serve as a testbed for the technology developed for
Herschel, a space telescope that is set
to launch in 2007 with two Canadian instruments on board.
The BLAST telescope mirror is two metres in diameter. No ground-based telescope has
the sensitivity or resolution of this telescope. Its precision,
and the fact that it is suspended from a balloon floating on the densest layer of the atmosphere,
gives it a clear view of the cosmos, free of the distorting effects of atmospheric gases.
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A team that knows the ins and outs
Canada designed and built the gondola, the pointing control system, and special-order
electronic equipment. The equipment was tested for the first time in September 2003
during a flight of some 30 hours.
All of these tasks are being performed under the supervision of principal investigator
Barth Netterfield on behalf of the University of Toronto, where Dr. Bart Netterfield teaches
physics and astronomy and participates in a number of other space-related projects.
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Assembling BLAST
(Photo: University of British Columbia)
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Drawing of the gondola that carries the telescope
(Image: University of Toronto)
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His fellow researcher Mark Halpern is an assistant professor in the
University of British Columbia Department of Physics. Dr. Halpern has participated in a
number of different experiments carried out aboard a sounding rocket.
Dr. Netterfield's team is made up of a number of high-powered research scientists
including Douglas Scott of the University of British Columbia and Peter Martin of the
University of Toronto.
Nor do contributions to BLAST come only from the academic world. Among the partners
in this project, which is partially financed by the Canadian Space Agency, are the
Natural Sciences and Engineering Research Council, AMEC Dynamic Structures Ltd.,
and NASA.
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