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dc.contributor.supervisor Naylor, David A.
dc.contributor.author Chapman, Ian Myles
dc.contributor.author University of Lethbridge. Faculty of Arts and Science
dc.date.accessioned 2007-04-25T19:37:36Z
dc.date.available 2007-04-25T19:37:36Z
dc.date.issued 2002
dc.identifier.uri https://hdl.handle.net/10133/150
dc.description xii, 143 leaves : ill. ; 28 cm. en
dc.description.abstract The performance of astronomical interferometer arrays operating at (sub) millimeter wave-lengths is seriously compromised by rapid variations of atmospheric water vapour content that distort the phase coherence of incoming celestial signals. Unless corrected, these phase distortions, which vary rapidly with time and from antenna to antenna, seriously compromise the sensitivity and image quality of these arrays. Building on the success of a prototype infrared radiometer for millimeter astronomy (IRMA I), which was ued to measure atmospheric water vapour column abundance, this thesis presents results from a second generation radiometer (IRMA II) operating at the James Clerk Maxwell Telescope (JCMT) on Mauna Kea, Hawaii from December, 2000 to March, 2001. These results include comparisons with other measures of water vapour abundance available on the summit of Mauna Kea and a comparison with a theorteical curve-of-growth calculated from a new radiative transfer model, ULTRAM, developed specifically for the purpose. Plans for a third generation radiometer (IRMA III) are also be discussed. en
dc.language.iso en_US en
dc.publisher Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2002 en
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en
dc.subject Radio interferometers en
dc.subject Antenna arrays en
dc.subject Water vapor, Atmospheric -- Hawaii -- Mauna Kea en
dc.subject Radio wave propagation en
dc.subject Dissertations, Academic en
dc.title The atmosphere above Mauna Kea at mid-infrared wavelengths en
dc.type Thesis en
dc.publisher.faculty Arts and Science
dc.publisher.department Department of Physics
dc.degree.level Masters


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