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dc.contributor.authorArchibald, E.N.
dc.contributor.authorJenness, T.
dc.contributor.authorHolland, W.S.
dc.contributor.authorCoulson, I.M.
dc.contributor.authorJessop, N.
dc.contributor.authorStevens, J. A.
dc.contributor.authorRobson, E.I.
dc.contributor.authorTilanus, R.P.J.
dc.contributor.authorLightfoot, J.F.
dc.date.accessioned2007-08-17T12:33:27Z
dc.date.available2007-08-17T12:33:27Z
dc.date.issued2002-10
dc.identifier.citationArchibald , E N , Jenness , T , Holland , W S , Coulson , I M , Jessop , N , Stevens , J A , Robson , E I , Tilanus , R P J & Lightfoot , J F 2002 , ' On the atmospheric limitations of ground-based submillimetre astronomy using array receivers ' , Monthly Notices of the Royal Astronomical Society , vol. 336 , no. 1 , pp. 1-13 . https://doi.org/10.1046/j.1365-8711.2002.05582.x
dc.identifier.issn0035-8711
dc.identifier.otherdspace: 2299/476
dc.identifier.otherORCID: /0000-0002-4010-8310/work/62747670
dc.identifier.urihttp://hdl.handle.net/2299/476
dc.descriptionThe definitive version is available at www.blackwell-synergy.com '.--Copyright Blackwell Publishing. DOI : 10.1046/j.1365-8711.2002.05582.x
dc.description.abstractThe calibration of ground-based submillimetre observations has always been a difficult process. We discuss how to overcome the limitations imposed by the submillimetre atmosphere. Novel ways to improve line-of-sight opacity estimates are presented, resulting in tight relations between opacities at differentwavelengths. The submillimetre camera SCUBA, mounted on the JCMT, is the first large-scale submillimetre array, and as such is ideal for combating the effects of the atmosphere. For example, we find that the off-source pixels are crucial for removing sky-noise. Benefitting from several years of SCUBA operation, a database of deep SCUBA observations has been constructed to better understand the nature of sky-noise and the effects of the atmosphere on instrument sensitivity. This has revealed several results. Firstly, there is evidence for positive correlations between sky-noise and seeing and sky-noise and sky opacity. Furthermore, 850-μm and 450-μm sky-noise are clearly correlated, suggesting that 450-μm data may be used to correct 850-μm observations for sky-noise. Perhaps most important of all: if off-source bolometers are used for sky-noise removal, there is no correlation between instrument sensitivity and chop throw, for chop throws out to 180 arcsec. Understanding the effects of submillimetre seeing is also important, and we find that the JCMT beam is not significantly broadened by seeing, nor is there an obvious correlation between seeing and pointing excursions.en
dc.format.extent1289416
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleOn the atmospheric limitations of ground-based submillimetre astronomy using array receiversen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionofrecord10.1046/j.1365-8711.2002.05582.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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