Mr. Mathew J. Rippa Profile

Mathew J. Rippa

Sr. Controls Software Engineer at Gemini Observatory

SPIE Involvement:

Author

23 years of experience in telescope operations support, software system design, with emphasis on distributed and embedded controls with hard real-time requirements. My hands on experience include large and small industrial machines, telescope mount control, opto-electronic systems, data acquisition, and digital systems.

Lead Engineer for Commissioning of Key Observatory Projects:
* F/16 Fast-steering Secondary mirror redesign and upgrade [2024]
* Real-time control system upgrade for Gemini North and South [2017]
* GMOS North and South Hamamatsu detector upgrade [2014, 2016]
* Telescope Vibration Tracking and suppression software [2015]

Skills
* Lead Engineer and team management
* Project Management, Systems Engineering, Requirements Specification
* Data acquisition and precision motion control systems
* Astronomical Instrumentation including Array Controllers
* C/C++, Python, Matlab, EPICS, Labview, Java
* PMAC, GALIL, Digital Signal Processing, Filters
* Advanced Motion Control; Field Oriented Control (FOC)
* GUI design in Qt, Python, Java, GTK+

Proceedings Article | 6 July 2018 Paper

Hamamatsu CCD upgrade for the Gemini multi-object spectrographs GMOS-S and GMOS-N: results from the 2017 GMOS-N upgrade and project completion summary

Julia Scharwächter, Kristin Chiboucas, German Gimeno, Luc Boucher, John White, Eduardo Tapia, Michael Lundquist, Mathew Rippa, Manuel Lazo, Jennifer Miller, Kathleen Labrie, Prabhani Rajakaruna, Jennifer Dunn, Kevin Hanna, Tim Hardy, Scot Kleinman, Javier Lührs, Michael Pohlen, Andrew Stephens

Proceedings Volume 10702, 107022T (2018) https://doi.org/10.1117/12.2313058

KEYWORDS: Charge-coupled devices, Amplifiers, Detector arrays, Gemini Observatory, Sensors, Telescopes, Astronomical imaging, Spectrographs, Stars

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Proceedings Article | 9 August 2016 Paper

On-sky commissioning of Hamamatsu CCDs in GMOS-S

German Gimeno, Katherine Roth, Kristin Chiboucas, Pascale Hibon, Luc Boucher, John White, Matthew Rippa, Kathleen Labrie, James Turner, Kevin Hanna, Manuel Lazo, Gabriel Pérez, Rolando Rogers, Roberto Rojas, Vinicius Placco, Richard Murowinski

Proceedings Volume 9908, 99082S (2016) https://doi.org/10.1117/12.2233883

KEYWORDS: Charge-coupled devices, Quantum efficiency, Amplifiers, Detector arrays, Gemini Observatory, Sensors, Spectroscopy, Video, Telescopes, Staring arrays

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Proceedings Article | 8 August 2016 Paper

Rejecting harmonic vibrations at Gemini with real-time vibration tracking

Mathew Rippa, Henri Bonnet, Thomas Hayward, Chadwick Trujillo, Chas Cavedoni, Tom Cumming, Chris Yamasaki, Neal Masuda, Cy Bagano, Steve Hardash

Proceedings Volume 9913, 99132M (2016) https://doi.org/10.1117/12.2231782

KEYWORDS: Gemini Observatory, Wavefronts, Telescopes, Glasses, Optical testing, Sensors, Reflectivity, Wavefront sensors, Control systems, Electronic filtering

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Proceedings Article | 27 July 2016 Paper

Characterizing the vibration environments of the Gemini telescopes

T. Hayward, M. Rippa, H. Bonnet, C. Cavedoni, R. Galvez, G. Gausachs, M. Cho

Proceedings Volume 9906, 99065N (2016) https://doi.org/10.1117/12.2232140

KEYWORDS: Cryocoolers, Mirrors, Telescopes, Gemini Observatory, Adaptive optics, Cryocoolers, Gemini Planet Imager, Mirrors, Fluctuations and noise, Chromium, Ions, Sensors

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Proceedings Article | 15 July 2016 Paper

Response to major earthquakes affecting Gemini twins

Michiel van der Hoeven, Rolando Rogers, Mathew Rippa, Gabriel Perez, Vanessa Montes, Cristian Moreno

Proceedings Volume 9910, 99100R (2016) https://doi.org/10.1117/12.2232161

KEYWORDS: Optical fibers, Sensors, Near infrared, Spectrographs, Calibration, Collimators, Surface plasmons, Fermium, Frequency modulation, Integrated optics

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Proceedings Article | 18 July 2014 Paper

Upgrade and standardization of real-time software for telescope systems at the Gemini telescopes

William Rambold, Pedro Gigoux, Cristian Urrutia, Angelic Ebbers, Philip Taylor, Mathew Rippa, Roberto Rojas, Tom Cumming

Proceedings Volume 9152, 915213 (2014) https://doi.org/10.1117/12.2057464

KEYWORDS: Software development, Standards development, Telescopes, Gemini Observatory, Control systems, Operating systems, Real-time computing, Adaptive optics, Databases, Human-machine interfaces

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Proceedings Article | 24 September 2012 Paper

Improved red sensitivity deep depletion e2v devices for the Gemini North GMOS instrument

Katherine Roth, Scot Kleinman, Kristin Chiboucas, Ricardo Schiavon, Kevin Hanna, Mathew Rippa, John White, Brian Walls, Chris Yamasaki, Richard Murowinski, Kathleen Labrie, German Gimeno, Mark Simpson

Proceedings Volume 8446, 84463V (2012) https://doi.org/10.1117/12.927065

KEYWORDS: Charge-coupled devices, Sensors, Gemini Observatory, Quantum efficiency, Amplifiers, CCD image sensors, Telescopes, Antireflective coatings, Temperature metrology, Stars

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Proceedings Article | 19 July 2010 Paper

Upgrading the Gemini secondary mirror micro-controller

Mathew Rippa, Jose Soto, Mike Sheehan, Christopher Carter, Gabriel Perez, Eric James, Robert Wyman, Cooper Nakayama, Chris Yamasaki

Proceedings Volume 7740, 77403R (2010) https://doi.org/10.1117/12.857916

KEYWORDS: Gemini Observatory, Mirrors, Data acquisition, Astronomy, Current controlled current source, Secondary tip-tilt mirrors, Operating systems

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Proceedings Article | 16 July 2008 Paper

The Gemini secondary mirror tip/tilt system: past, present, and future

Christopher Carter, Mathew Rippa, Roberto Rojas, Michael Sheehan

Proceedings Volume 7019, 701921 (2008) https://doi.org/10.1117/12.789960

KEYWORDS: Mirrors, Servomechanisms, Gemini Observatory, Control systems, Telescopes, Sensors, Computing systems, Secondary tip-tilt mirrors, Digital signal processing, Computer programming

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Proceedings Article | 14 July 2008 Paper

Applications of high-rate data logging to telescope system development and operations

Christopher Carter, Mathew Rippa

Proceedings Volume 7019, 70190G (2008) https://doi.org/10.1117/12.790081

KEYWORDS: Servomechanisms, Telescopes, Gemini Observatory, Digital signal processing, Mirrors, Computing systems, Control systems, Reflectivity, Secondary tip-tilt mirrors, Optical instrument design

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Proceedings Article | 30 September 2004 Paper

The commissioning of and first results from the UIST imager spectrometer

Suzanne Ramsay Howat, Stephen Todd, Sandy Leggett, Chris Davis, Mel Strachan, Alastair Borrowman, Maureen Ellis, Jim Elliot, David Gostick, Russell Kackley, Matthew Rippa

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.551673

KEYWORDS: Telescopes, Imaging spectroscopy, Spectroscopy, Astronomy, Spectroscopes, Infrared radiation, Image quality, Cameras, Infrared imaging, Spatial resolution

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