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UBV photometry of close visual double stars using an area scanner
A computer-controlled area scanner designed for use on close visual double stars is described. Techniques used in making observations and in subsequent reduction of the data are given. Problems encountered are discussed. Magnitude differences and magnitudes and colours of components are given for 15...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Astronomy
2016
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| _version_ | 1867613187581411329 |
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| access_status_str | Open Access |
| author | Hurly, Patrick Rupert |
| author2 | Warner, Brian |
| author_browse | Hurly, Patrick Rupert Warner, Brian |
| author_facet | Warner, Brian Hurly, Patrick Rupert |
| author_sort | Hurly, Patrick Rupert |
| collection | Thesis |
| description | A computer-controlled area scanner designed for use on close visual double stars is described. Techniques used in making observations and in subsequent reduction of the data are given. Problems encountered are discussed. Magnitude differences and magnitudes and colours of components are given for 153 bright southern close visual doubles. Separations are given for some of the stars. Absolute magnitudes are calculated for the primaries by several methods. Individual stars are discussed where appropriate. The accuracy of the results is discussed. No significant systematic errors are evident in the results, but systematic errors are present in the results of other authors. Suggestions are made for the future use of conventional photometers, scanners and other techniques in the field of visual double star photometry and astrometry. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/16638 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:09.918Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Astronomy |
| publisherStr | Department of Astronomy |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/16638 UBV photometry of close visual double stars using an area scanner Hurly, Patrick Rupert Warner, Brian Astronomy A computer-controlled area scanner designed for use on close visual double stars is described. Techniques used in making observations and in subsequent reduction of the data are given. Problems encountered are discussed. Magnitude differences and magnitudes and colours of components are given for 153 bright southern close visual doubles. Separations are given for some of the stars. Absolute magnitudes are calculated for the primaries by several methods. Individual stars are discussed where appropriate. The accuracy of the results is discussed. No significant systematic errors are evident in the results, but systematic errors are present in the results of other authors. Suggestions are made for the future use of conventional photometers, scanners and other techniques in the field of visual double star photometry and astrometry. 2016-02-01T10:02:48Z 2016-02-01T10:02:48Z 1976 Master Thesis Masters MSc http://hdl.handle.net/11427/16638 eng application/pdf Department of Astronomy Faculty of Science University of Cape Town |
| spellingShingle | Astronomy Hurly, Patrick Rupert UBV photometry of close visual double stars using an area scanner |
| thesis_degree_str | Master's |
| title | UBV photometry of close visual double stars using an area scanner |
| title_full | UBV photometry of close visual double stars using an area scanner |
| title_fullStr | UBV photometry of close visual double stars using an area scanner |
| title_full_unstemmed | UBV photometry of close visual double stars using an area scanner |
| title_short | UBV photometry of close visual double stars using an area scanner |
| title_sort | ubv photometry of close visual double stars using an area scanner |
| topic | Astronomy |
| url | http://hdl.handle.net/11427/16638 |
| work_keys_str_mv | AT hurlypatrickrupert ubvphotometryofclosevisualdoublestarsusinganareascanner |