{"id":{"repo_id":"maynooth","oai_identifier":"oai:mural.maynoothuniversity.ie:11884"},"canonical_url":"https://search.dev.ndltd.org/etd/maynooth/oai:mural.maynoothuniversity.ie:11884","repository":{"repo_id":"maynooth","name":"National University of Ireland - Maynooth","base_url":"http://mural.maynoothuniversity.ie/cgi/oai2"},"display":{"title":"Design and Analysis of Quasioptical Components for use in Astronomical Telescopes","abstract":"This thesis describes the use of Gaussian beam modes (GBM) and physical optics (PO) to design and analyse astronomical telescope systems operating at millimetre and submillimetre wavelengths. The techniques are applied to a proposed re-design of the 3 mm channel of the 20 m Onsala Space Observatory telescope. The industrystandard software GRASP was used for the PO simulations; GBM analysis was carried out using code written in mathematical software packages. GRASP was used to investigate the effect of random and systematic surface errors on such systems. Finally, Maynooth University's Vector Network Analyser was calibrated, aligned and used to characterise new waveguide probes.","abstract_html":"This thesis describes the use of Gaussian beam modes (GBM) and physical optics (PO) to design and analyse astronomical telescope systems operating at millimetre and submillimetre wavelengths. The techniques are applied to a proposed re-design of the 3 mm channel of the 20 m Onsala Space Observatory telescope. The industrystandard software GRASP was used for the PO simulations; GBM analysis was carried out using code written in mathematical software packages. GRASP was used to investigate the effect of random and systematic surface errors on such systems. Finally, Maynooth University's Vector Network Analyser was calibrated, aligned and used to characterise new waveguide probes.","abstract_has_math":false,"creators":["Sheridan, Rory Eoin"],"institution":"National University of Ireland Maynooth","degree_name":null,"degree_level":"masters","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018","date_published":"2018","updated_at":"2026-07-24T03:03:02Z","subjects":[],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Sheridan, Rory Eoin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018"]},{"key":"dc:date.issued","label":"Date","values":["2018"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["National University of Ireland Maynooth"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://mural.maynoothuniversity.ie/id/eprint/11884/"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["masters"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://mural.maynoothuniversity.ie/id/eprint/11884/1/RSheridan_MScThesis.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis describes the use of Gaussian beam modes (GBM) and physical optics (PO) to design and analyse astronomical telescope systems operating at millimetre and submillimetre wavelengths. The techniques are applied to a proposed re-design of the 3 mm channel of the 20 m Onsala Space Observatory telescope. The industrystandard software GRASP was used for the PO simulations; GBM analysis was carried out using code written in mathematical software packages. GRASP was used to investigate the effect of random and systematic surface errors on such systems. Finally, Maynooth University's Vector Network Analyser was calibrated, aligned and used to characterise new waveguide probes."]},{"key":"dc:format","label":"Dc Format","values":["text"]},{"key":"dc:title","label":"Title","values":["Design and Analysis of Quasioptical Components for use in Astronomical Telescopes"]}]}],"canonical_facts":{"dc:creator":["Sheridan, Rory Eoin"],"dc:date":["2018"],"dc:date.issued":["2018"],"dc:description.abstract":["This thesis describes the use of Gaussian beam modes (GBM) and physical optics (PO) to design and analyse astronomical telescope systems operating at millimetre and submillimetre wavelengths. The techniques are applied to a proposed re-design of the 3 mm channel of the 20 m Onsala Space Observatory telescope. The industrystandard software GRASP was used for the PO simulations; GBM analysis was carried out using code written in mathematical software packages. GRASP was used to investigate the effect of random and systematic surface errors on such systems. Finally, Maynooth University's Vector Network Analyser was calibrated, aligned and used to characterise new waveguide probes."],"dc:format":["text"],"dc:identifier.uri":["https://mural.maynoothuniversity.ie/id/eprint/11884/1/RSheridan_MScThesis.pdf"],"dc:language":["en"],"dc:publisher.institution":["National University of Ireland Maynooth"],"dc:relation.isreferencedby":["https://mural.maynoothuniversity.ie/id/eprint/11884/"],"dc:title":["Design and Analysis of Quasioptical Components for use in Astronomical Telescopes"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["masters"]},"updated_at":"2026-07-24T03:03:02Z"}