Dr. Ramotholo Sefako Profile

Dr. Ramotholo Sefako

at SAAO

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 29 April 2021 Presentation + Paper

SAAO observing station protection regulations

Ramotholo Sefako, Sinethemba Taaibos, Jean Bernado, Nhlavutelo Macebele, Avhapfani C. Mulaudzi, Petri Vaisanen

Proceedings Volume 11450, 1145012 (2021) https://doi.org/10.1117/12.2562521

KEYWORDS: Pollution, Astronomy, Radio astronomy, Observatories, Astronomical imaging, Radio optics, Infrared telescopes, Large telescopes, Optical telescopes, Wind energy

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Proceedings Article | 13 December 2020 Presentation + Paper

Design of telescope and instrument control and interface software at the South African Astronomical Observatory: building blocks of the intelligent observatory

Carel H. D. van Gend, Amanda Sickafoose, Stephen Potter, Briehan Lombaard, Pieter Swanevelder, Hitesh Gajjar, Hannah Worters, Willie Koorts, Keegan Titus, Craig Sass, Egan Loubser, Nicolas Erasmus, James O'Connor, Ramotholo Sefako, Roufurd Julie, Freya Bovim

Proceedings Volume 11452, 1145206 (2020) https://doi.org/10.1117/12.2562161

KEYWORDS: Telescopes, Observatories, Astronomical telescopes, Astronomy, Optical instrument design, Control systems, Software development, Computer architecture, Large telescopes, Cameras

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SPIE Journal Paper | 14 May 2019

SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain): a versatile and efficient low- to medium-resolution, long-slit spectrograph on the South African Astronomical Observatory’s 1.9-m telescope

Lisa Crause, David Gilbank, Carel van Gend, Hannah Worters, Craig Sass, Enrico Kotze, Stephen Potter, Amanda Sickafoose, Ramotholo Sefako, John Southworth, Lucas Macri, John Thorstensen, Cezary Galan, Patricia Skelton, Chris Engelbrecht, Ian Braker, Hartmut Winkler, Daniel Pieńkowski, Derya Sürgit, Ahmet Erdem, Matt Burleigh

JATIS, Vol. 5, Issue 02, 024007, (May 2019) https://doi.org/10.1117/12.10.1117/1.JATIS.5.2.024007

KEYWORDS: Spectrographs, Cameras, Telescopes, Stars, Astronomy, Charge-coupled devices, Lamps, Mirrors, Astronomical telescopes, Sensors

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Proceedings Article | 10 July 2018 Presentation + Paper

SALT and SAAO strategy, focusing on the time-domain: process, plans, and challenges

Petri Väisänen, Lisa Crause, David Gilbank, David Buckley, Chris Coetzee, Steven Crawford, Stephen Potter, Retha Pretorius, Encarni Romero Colmenero, Ramotholo Sefako, Michael Shara, Amanda Sickafoose, Theodore Williams

Proceedings Volume 10704, 107040A (2018) https://doi.org/10.1117/12.2313272

KEYWORDS: Telescopes, Galactic astronomy, Astronomy, Spectrographs, Observatories, Stars, Exoplanets, Large telescopes, Spherical lenses, Spectral resolution, Software development

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Proceedings Article | 27 July 2016 Paper

Re-aluminising the primary mirror of the South African Astronomical Observatory's 74-inch telescope

Lisa Crause, John Stoffels, Willie Koorts, Brendt Christian, Wilhelmina de Water, Timothy Fransman, Denville Gibbons, Nelson Machete, Ramotholo Sefako, Sinethemba Taaibos

Proceedings Volume 9906, 99063W (2016) https://doi.org/10.1117/12.2232675

KEYWORDS: Mirrors, Telescopes, Coating, Reflectivity, Astronomy, Astronomical telescopes, Observatories, Aluminum, Ocean optics, Glasses

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Proceedings Article | 23 July 2008 Paper

The image quality of the Southern African Large Telescope (SALT)

Darragh O'Donoghue, Eli Atad-Ettedgui, Luis Balona, Bruce Bigelow, John Booth, Lucian Botha, Janus Brink, David Buckley, Phil Charles, Alrin Christians, J. Christopher Clemens, Lisa Crause, Steven Crawford, Geoffrey Evans, Hitesh Gajjar, Yas Hashimoto, Malcolm Hendricks, Alexei Kniazev, Anthony Koeslag, Willie Koorts, Herman Kriel, Nicola Loaring, Jonathan Love, Fred Marang, Douglas Metcalfe, Brennan Meyer, James O'Connor, Charl du Plessis, Lawrence Ramsey, Encarni Romero-Colmenero, Craig Sass, Johann Scholtz, Ramotholo Sefako, Sandisa Siyengo, Martin Still, Ockert Strydom, Arkadiusz Swat, Johann Du Toit, Petri Vaisanen, Martyn Wells, Hannah Worters

Proceedings Volume 7018, 701813 (2008) https://doi.org/10.1117/12.788841

KEYWORDS: Mirrors, Telescopes, Monochromatic aberrations, Image quality, Cameras, Simulation of CCA and DLA aggregates, Image segmentation, Wavefront sensors, Wavefronts, Interfaces

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Showing 5 of 6 publications

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