Mr. Craig Sass Profile

Craig Sass

Manager at South African Astronomical Observatory

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 18 July 2024 Presentation + Paper

Southern African Large Telescope (SALT) instrumentation update

Lisa Crause, Marsha Wolf, Matthew Bershady, Michael Smith, Joshua Oppor, Moses Mogotsi, Richard McCracken, Yuk Shan Cheng, Daniel Holdsworth, Willem van der Westhuizen, Etienne Simon, Malcolm Scarrott, Derryck Reid, Sabyasachi Chattopadhyay, Craig Sass, Kurt Jaehnig, Jeff Percival, Ralf Kotulla, Anthony Koeslag, Enrico Kotze, Janus Brink, Deon Lategan, David A. Buckley, Lee Townsend, John Menzies, Kathryn Rosie, Rosalind Skelton, Danièl Groenewald, Eben Wiid, Nico van der Merwe, Melanie Saayman, Alexei Kniazev, Rudi Kuhn, Tasheen Naicker, Roufurd Julie, Encarni Romero Colmenero, Paul Rabe

Proceedings Volume 13096, 1309607 (2024) https://doi.org/10.1117/12.3018784

KEYWORDS: Equipment, Spectrographs, Telescopes, Calibration, Collimators, Cameras, Design, Near infrared, Large telescopes

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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 | 6 July 2018 Paper

Design and results for the SAAO wide-field nasmyth camera

Pieter Swanevelder, Dave Carter, James O'Connor, Hannah Worters, Willie Koorts, Briehan Lombaard, Egan Loubser, Keegan Titus, Carel van Gend, Michael Rust, Craig Sass, Hitesh Gajjar, Amanda Sickafoose, A. N. Ramaprakash, Pravin Chordia, Mahesh Burse, Sujit Punnadi, Bhushan Joshi, Sakya Sinha

Proceedings Volume 10702, 107022K (2018) https://doi.org/10.1117/12.2312540

KEYWORDS: Camera shutters, Charge-coupled devices, Cameras, Telescopes, Astronomy

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Proceedings Article | 9 August 2016 Paper

SpUpNIC (Spectrograph Upgrade: Newly Improved Cassegrain) on the South African Astronomical Observatory's 74-inch telescope

Lisa Crause, Dave Carter, Alroy Daniels, Geoff Evans, Piet Fourie, David Gilbank, Malcolm Hendricks, Willie Koorts, Deon Lategan, Egan Loubser, Sharon Mouries, James O'Connor, Darragh O'Donoghue, Stephen Potter, Craig Sass, Amanda Sickafoose, John Stoffels, Pieter Swanevelder, Keegan Titus, Carel van Gend, Martin Visser, Hannah Worters

Proceedings Volume 9908, 990827 (2016) https://doi.org/10.1117/12.2230818

KEYWORDS: Spectrographs, Cameras, Collimators, Mirrors, Telescopes, Diffraction gratings, Charge-coupled devices, Spectrographs, Cameras, Collimators, Diffraction gratings, Lamps, Optical alignment, CCD cameras

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Proceedings Article | 27 July 2016 Paper

A new alignment procedure for the South African Astronomical Observatory's 74-inch telescope

Lisa Crause, John Booth, David Doss, Egan Loubser, James O'Connor, Craig Sass, Amanda Sickafoose, Hannah Worters

Proceedings Volume 9906, 99064F (2016) https://doi.org/10.1117/12.2233116

KEYWORDS: Telescopes, Space telescopes, Mirrors, Optical alignment, Observatories, Secondary tip-tilt mirrors, Stars, Reticles, Monochromatic aberrations, Alignment procedures

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SPIE Journal Paper | 11 February 2013

Resolving the Southern African Large Telescope’s image quality problems

Darragh O'Donoghue, Lisa Crause, James O'Connor, Francois Strumpfer, Ockert Strydom, Craig Sass, Janus Brink, Charl du Plessis, Eben Wiid, Jonathan Love

OE, Vol. 52, Issue 08, 081604, (February 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.8.081604

KEYWORDS: Mirrors, Telescopes, Monochromatic aberrations, Computer generated holography, Interfaces, Large telescopes, Image quality, Stars, Cameras, Optical testing

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Proceedings Article | 17 September 2012 Paper

A happy conclusion to the SALT image quality saga

Lisa Crause, Darragh O'Donoghue, James O'Connor, Francois Strumpfer, Ockert Strydom, Craig Sass, Charl du Plessis, Eben Wiid, Jonathan Love, Janus Brink, Martin Wilkinson, Chris Coetzee

Proceedings Volume 8444, 84444I (2012) https://doi.org/10.1117/12.924997

KEYWORDS: Mirrors, Telescopes, Stars, Computer generated holography, Image quality, Interfaces, Optical testing, Autocollimators, Aluminum, Monochromatic aberrations

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Proceedings Article | 19 July 2010 Paper

Saving SALT: repairs to the spherical aberration corrector of the Southern African Large Telescope (SALT)

Darragh O'Donoghue, James O'Connor, Lisa Crause, Francois Strumpfer, Ockert Strydom, Janus Brink, Craig Sass, Eben Wiid, Eli Atad-Ettedgui

Proceedings Volume 7739, 77390Q (2010) https://doi.org/10.1117/12.856239

KEYWORDS: Telescopes, Mirrors, Computer generated holography, Monochromatic aberrations, Interfaces, Image quality, Optical alignment, Optical testing, Large telescopes, Cameras

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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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Proceedings Article | 11 July 2008 Paper

A new two channel high-speed photo-polarimeter (HIPPO) for the SAAO

Stephen Potter, David Buckley, Darragh O'Donoghue, James O'Conner, Piet Fourie, Geoff Evans, Craig Sass, Lisa Crause, O. Butters, Andrew Norton, Koji Mukai, Martin Still

Proceedings Volume 7014, 70145E (2008) https://doi.org/10.1117/12.789716

KEYWORDS: X-ray astronomy, Astronomy, Beam splitters, Modulation, Polarization, Ultraviolet astronomy, X-rays, Ultraviolet radiation, Optical filters, Wave plates

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Showing 5 of 11 publications

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