The atmosphere above Mauna Kea at mid-infrared wavelengths

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dc.contributor.authorChapman, Ian Myles
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorNaylor, David A.
dc.date.accessioned2007-04-25T19:37:36Z
dc.date.available2007-04-25T19:37:36Z
dc.date.issued2002
dc.degree.levelMasters
dc.descriptionxii, 143 leaves : ill. ; 28 cm.en
dc.description.abstractThe 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.identifier.urihttps://hdl.handle.net/10133/150
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2002en
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyArts and Science
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectRadio interferometersen
dc.subjectAntenna arraysen
dc.subjectWater vapor, Atmospheric -- Hawaii -- Mauna Keaen
dc.subjectRadio wave propagationen
dc.subjectDissertations, Academicen
dc.titleThe atmosphere above Mauna Kea at mid-infrared wavelengthsen
dc.typeThesisen
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