Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"South African Astronomical Observatory"”.
-
South African Astronomical Observatory data archiving for multi-wavelength astronomy research
This research investigates the best practices for creating a data archive system that can store optical and radio astronomy data as well as interact with other astronomy archives. Archives are built and maintained by staff that specialise in big data storage, information security, database …
-
Stellar occultations by bodies in the outer solar system at the South African Astronomical Observatory
… space probes. Here, we present work done by the South African Astronomical Observatory (SAAO) stellar occultation observing program during the period of July 2016 - July 2017. Specifically, we describe the telescopes, instruments and data analysis pipelines that are used for the SAAO stellar …
-
Library and Information Services (LIS) in astronomical research: an analysis of the contribution of LIS to the historical development of astronomy at the South African Astronomical Observatory
… of library and information services (LIS) to the South African Astronomical Observatory (SAAO) in the context of the historical development of astronomy in South Africa. Three critical questions guided the study: How has library and information service provision to the SAAO evolved historically in …
-
Guidance and control of sounding rockets
… of a sounding rocket flight computer for the South African Astronomical Observatory (SAAO). Sounding rockets carry instruments with which to take measurements in the Earth’s atmosphere in sub-orbital flight. The South African Astronomical Observatory (SAAO) requires a flight computer for their …
-
Robotic control of a photometric telescope
… (ACT), a robotic telescope at the Sutherland, South Africa, site of the South African Astronomical Observatory (SAAO). The approach adopted involved a high level of modularisation of the software and the use of software simulators in an effort to foster rapid software development and enable …
-
Accretion processes in cataclysmic variable stars: insights from optical transient surveys
… with the 1-m and 1.9-m telescopes and the 10-m Southern African Large Telescope (SALT) at the South African Astronomical Observatory (SAAO). Observations of 7 outbursting AM CVn stars with orbital periods ranging from
-
Queue scheduling the Alan Cousins Telescope
… photoelectric telescope situated at the South African Astronomical Observatory, in Sutherland. The telescope was designed and built to execute a range of photometry programmes, but is used mainly for the long-term monitoring of variable stars. In addition, there is the potential for …
-
Searching for Ultra-compact binary stars with the MeerLICHT Southern All-Sky Survey
… This was done by searching through the MeerLICHT Southern All-Sky Survey (ML SASS) data with a candidate selection process which made use of a selection technique based on the colours of stars. The candidates found were then observed with an extensive follow-up observation campaign which included …
-
Genetic programming applied to RFI mitigation in radio astronomy
… of the KAT-7 radio telescope array built by the South African Square Kilometre Array (SKA-SA). Karoo GP, kNN, and SVM were comparatively employed, the outcome of which provided noteworthy correlations between input parameters, the complexity of the evolved hypotheses, and performance of raw data …
-
The distance to the Norma cluster and its relation to the great attractor region
… New Technology Telescope (NTT) at the European Southern Observatory (ESO) 2) the J- and Ks-band Fundamental Plane analysis for 31 galaxies using the Japanese 1.4 m InfraRed Survey Facility (IRSF) at the South African Astronomical Observatory (SAAO) 3) the combined NTT and IRSF Ks-band …
-
Multi-wavelength observations of sprites over southern Africa
… the _rst ground-based observations of sprites in southern Africa. These observations were conducted at the South African Astronomical Observatory, Sutherland, South Africa, during the austral summer of 2015/2016, 2016/2017 and 2017/2018, as well as at a site that is close to South African Square …
-
Characterisation of small, close-approaching near-earth asteroids
… successfully observed and characterised with the South African Astronomical Observatory (SAAO) 40-inch telescope and the Sutherland HighSpeed Optical Camera. Out of the 20 NEAs, 14 had diameters < 300 m (H > 21). Characterisation involved assigning taxonomic probabilities to each NEA based on …
-
A spectroscopic study of the rapidly oscillating peculiar A star HD 134214
… (roAp stars) using the 0.75-rn telescope at the South African Astronomical Observatory. Although a promising candidate pulsator was found in HD 156869, no such oscillations were seen in these stars. Further spectroscopic observations did discover a 21 mm pulsation in HD 116114 and as a result …
-
Peculiar flow fields in the zone of avoidance from the near-infrared Tully-Fisher relation
… around the major large-scale structures in the southern Zone of Avoidance as derived from peculiar motions of galaxies. The peculiar velocities were derived from a galaxy sample based on the systematic deep Parkes HI Zone of Avoidance survey (HIZOA) using a newly optimized Near InfraRed (NIR) …
-
Spectroscopic and photometric observations and analysis of compact binaries
… of these sources were observed as part of the Southern African Large Telescope (SALT) transient follow-up program. The CV, 2SXPS J062339.9−265751, was recently found in the eROSITA all-sky survey and was shown to be a Novalike CV system, although its true nature is not well established and …