Dr. Christ Ftaclas Profile

Dr. Christ Ftaclas

Astronomer at Institute for Astronomy

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 7 August 2014 Paper

Paper

Results from the Gemini NICI Planet-Finding Campaign

Beth Biller, Michael Liu, Zahed Wahhaj, Eric Nielsen, Thomas Hayward, Mark Chun, Laird Close, Christ Ftaclas, Jared Males, Markus Hartung, I. Reid, Evgenya Shkolnik, Andrew Skemer, Matthias Tecza, Niranjan Thatte, Fraser Clarke, Douglas Toomey

Proceedings Volume 9148, 91481O (2014) https://doi.org/10.1117/12.2057339

KEYWORDS: Stars, Planets, Photonic integrated circuits, Adaptive optics, Exoplanets, Gemini Observatory, Coronagraphy, Astronomy, Observatories, Imaging systems

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Proceedings Article | 28 July 2014 Paper

Paper

InnoPOL: an EMCCD imaging polarimeter and 85-element curvature AO system on the 3.6-m AEOS telescope for cost effective polarimetric speckle suppression

David Harrington, Svetlana Berdyugina, Mark Chun, Christ Ftaclas, Daniel Gisler, Jeff Kuhn

Proceedings Volume 9147, 91477C (2014) https://doi.org/10.1117/12.2056667

KEYWORDS: Polarimetry, Adaptive optics, Polarization, Electron multiplying charge coupled devices, Modulation, Telescopes, Speckle, Calibration, Liquid crystals, Mirrors

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Proceedings Article | 29 July 2010 Paper

Paper

The Gemini NICI Planet-Finding Campaign

Michael Liu, Zahed Wahhaj, Beth Biller, Eric Nielsen, Mark Chun, Laird Close, Christ Ftaclas, Markus Hartung, Thomas Hayward, Fraser Clarke, I. Neill Reid, Evgenya Shkolnik, Mathias Tecza, Niranjan Thatte, Silvia Alencar, Pawel Artymowicz, Alan Boss, Adam Burrows, Elisabethe de Gouveia Dal Pino, Jane Gregorio-Hetem, Shigeru Ida, Marc Kuchner, Douglas Lin, Douglas Toomey

Proceedings Volume 7736, 77361K (2010) https://doi.org/10.1117/12.858358

KEYWORDS: Stars, Planets, Adaptive optics, Exoplanets, Imaging systems, Telescopes, Monte Carlo methods, Gemini Observatory, Point spread functions, Space telescopes

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Proceedings Article | 29 July 2010 Paper

Paper

Error propagation in curvature sensors

Aglaé Kellerer, Mark Chun, Christ Ftaclas

Proceedings Volume 7736, 773658 (2010) https://doi.org/10.1117/12.856641

KEYWORDS: Sensors, Wave propagation, Photons, Wavefronts, Adaptive optics, Error analysis, Chemical elements, Telescopes, Reconstruction algorithms, Mirrors

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Proceedings Article | 25 July 2008 Paper

Paper

Day-one science with CanariCam, the Gran Telescopio Canarias multi-mode mid-infrared camera

Charles Telesco, Christopher Packham, Christ Ftaclas, James Hough, Margaret Moerchen, Kevin Hanna, Jeffrey Julian, Frank Varosi, Roger Julian, Greg Bennett, Charles Murphey, Francisco Reyes, Craig Warner

Proceedings Volume 7014, 70140R (2008) https://doi.org/10.1117/12.787697

KEYWORDS: Mid-IR, Stars, Polarimetry, Coronagraphy, Imaging spectroscopy, Telescopes, Polarization, James Webb Space Telescope, Cameras, Silicates

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Proceedings Article | 17 July 2008 Paper

Paper

Observing strategies for the NICI campaign to directly image extrasolar planets

Beth Biller, Étienne Artigau, Zahed Wahhaj, Markus Hartung, Michael Liu, Laird Close, Mark Chun, Christ Ftaclas, Douglas Toomey, Thomas Hayward

Proceedings Volume 7015, 70156Q (2008) https://doi.org/10.1117/12.789565

KEYWORDS: Planets, Point spread functions, K band, Methane, Stars, Coronagraphy, Absorption, Exoplanets, Imaging systems, Gemini Observatory

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Proceedings Article | 14 July 2008 Paper

Paper

IMAKA: imaging from Mauna KeA with an atmosphere corrected 1 square degree optical imager

Olivier Lai, Mark Chun, Jean Charles Cuillandre, Ray Carlberg, Harvey Richer, David Andersen, John Pazder, John Tonry, René Doyon, Simon Thibault, Jim Dunlop, Chris Pritchet, Jean Pierre Véran, Christ Ftaclas, Peter Onaka, Klaus Hodapp, Robert McLaren, Emmanuel Bertin, Yannick Mellier, Pierre Astier, Reynald Pain

Proceedings Volume 7015, 70154H (2008) https://doi.org/10.1117/12.790114

KEYWORDS: Stars, Turbulence, Adaptive optics, Mirrors, Image quality, Wavefront sensors, Monte Carlo methods, Telescopes, Deformable mirrors, Point spread functions

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Proceedings Article | 10 July 2008 Paper

Paper

Performance of the near-infrared coronagraphic imager on Gemini-South

Mark Chun, Doug Toomey, Zahed Wahhaj, Beth Biller, Etienne Artigau, Tom Hayward, Mike Liu, Laird Close, Markus Hartung, Francois Rigaut, Christ Ftaclas

Proceedings Volume 7015, 70151V (2008) https://doi.org/10.1117/12.787683

KEYWORDS: Coronagraphy, Imaging systems, Adaptive optics, Calcium, Optical instrument design, Planets, Gemini Observatory, Telescopes

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Proceedings Article | 9 July 2008 Paper

Paper

NICI: combining coronagraphy, ADI, and SDI

Étienne Artigau, Beth Biller, Zahed Wahhaj, Markus Hartung, Thomas Hayward, Laird Close, Mark Chun, Michael Liu, Gelys Trancho, François Rigaut, Douglas Toomey, Christ Ftaclas

Proceedings Volume 7014, 70141Z (2008) https://doi.org/10.1117/12.788390

KEYWORDS: Point spread functions, Coronagraphy, Imaging systems, Image filtering, Signal to noise ratio, Adaptive optics, Digital filtering, Speckle pattern, Interference (communication), Gemini Observatory

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Proceedings Article | 9 July 2008 Paper

Paper

Laboratory performance characteristics of CanariCam, the GTC facility multi-mode mid-IR camera

Margaret Moerchen, Christopher Packham, Charles Telesco, Kevin Hanna, Jeffrey Julian, Frank Varosi, James Hough, Francisco Reyes, Christ Ftaclas, J. Bennett, Roger Julian, Charles Murphey, Craig Warner

Proceedings Volume 7014, 70142E (2008) https://doi.org/10.1117/12.789040

KEYWORDS: Polarimetry, Sensors, Polarization, Image quality, Mid-IR, Telescopes, Image quality standards, Coronagraphy, Cameras, Imaging spectroscopy

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Proceedings Article | 20 October 2004 Paper

Paper

'OHANA

Guy Perrin, Olivier Lai, Julien Woillez, Jean Guerin, Takayuki Kotani, Sebastien Vergnole, Andrew Adamson, Christ Ftaclas, Olivier Guyon, Pierre Lena, Jun Nishikawa, Francois Reynaud, Katherine Roth, Stephen Ridgway, Alan Tokunaga, Peter Wizinowich

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551585

KEYWORDS: Optical fibers, Telescopes, Interferometers, Single mode fibers, K band, Interferometry, Gemini Observatory, Space telescopes, Dispersion, Glasses

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Proceedings Article | 7 March 2003 Paper

Paper

CanariCam: a multimode mid-infrared camera for the Gran Telescopio CANARIAS

Charles Telesco, David Ciardi, James French, Christ Ftaclas, Kevin Hanna, David Hon, James Hough, Jeffrey Julian, Roger Julian, Mark Kidger, Chris Packham, Robert Pina, Frank Varosi, R. Glenn Sellar

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.458979

KEYWORDS: Telescopes, Mid-IR, Coronagraphy, Cameras, Polarimetry, Sensors, Spectroscopy, Imaging spectroscopy, Polarization, Stars

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Proceedings Article | 7 March 2003 Paper

Paper

Near infrared coronagraphic imager for Gemini South

Douglas Toomey, Christ Ftaclas

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461099

KEYWORDS: Adaptive optics, Coronagraphy, Imaging systems, Gemini Observatory, Cameras, Stars, Planetary systems, Relays, Mirrors, Planets

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Proceedings Article | 3 March 2003 Paper

Paper

Jovian Planet Finder optical system

John Krist, Mark Clampin, Larry Petro, Robert Woodruff, Holland Ford, Garth Illingworth, Christ Ftaclas

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457838

KEYWORDS: Mirrors, Planets, Stars, Space telescopes, Wavefronts, Light scattering, Telescopes, Coronagraphy, Polishing, Point spread functions

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Proceedings Article | 24 February 2003 Paper

Paper

The Eclipse mission: a direct imaging survey of nearby planetary systems

John Trauger, Tony Hull, Karl Stapelfeldt, Dana Backman, Roger Bagwell, Robert Brown, Adam Burrows, Christopher Burrows, Mark Ealey, Christ Ftaclas, Sara Heap, Jeremy Kasdin, Jonathan Lunine, Geoff Marcy, David Redding, Wesley Traub, Bruce Woodgate, Raghvendra Sahai, David Spergel

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460023

KEYWORDS: Planets, Stars, Coronagraphy, Space telescopes, Wavefronts, Mirrors, Planetary systems, Telescopes, Imaging systems, Clouds

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Proceedings Article | 29 June 2000 Paper

Paper

NPT: a large-aperture telescope for high dynamic range astronomy

Robert Joseph, Jeff Kuhn, Alan Tokunaga, Roy Coulter, Christ Ftaclas, J. Elon Graves, Charles Hull, D. Jewitt, Donald Mickey, Gilberto Moretto, Doug Neill, Malcolm Northcott, Claude Roddier, Francois Roddier, Walter Siegmund, Tobias Owen

Proceedings Volume 4005, (2000) https://doi.org/10.1117/12.390156

KEYWORDS: Telescopes, Solar system, Stars, Astronomy, Adaptive optics, Astronomical telescopes, Exoplanets, Mirrors, High dynamic range imaging, Coronagraphy

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Proceedings Article | 21 August 1998 Paper

Paper

CoCo: an experiment in infrared coronagraphy at the IRTF

Douglas Toomey, Christ Ftaclas, Robert Brown, David Trilling

Proceedings Volume 3354, (1998) https://doi.org/10.1117/12.317214

KEYWORDS: Coronagraphy, Telescopes, Stars, Cameras, Infrared radiation, Infrared telescopes, Diffraction, Light scattering, Infrared cameras, Methane

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Proceedings Article | 24 July 1998 Paper

Paper

On-orbit performance of the fine guidance sensor FGS-1R

Kevin Chisholm, Christ Ftaclas, Linda Abramowicz-Reed

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317119

KEYWORDS: Modulation, Stars, Monochromatic aberrations, Prisms, Wavefronts, Mirrors, Interferometers, Sensors, Databases, Optical alignment

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Proceedings Article | 26 May 1998 Paper

Paper

Optimization of the Hubble Space Telescope fine guidance sensor target-acquisition parameters

Linda Abramowicz-Reed, Christ Ftaclas, Kevin Chisholm

Proceedings Volume 3351, (1998) https://doi.org/10.1117/12.308839

KEYWORDS: Stars, Monte Carlo methods, Target acquisition, Wavefronts, Modulation, Sensors, Servomechanisms, Prisms, Error analysis, Hubble Space Telescope

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Proceedings Article | 1 June 1994 Paper

Paper

Direct detection of extra-solar planets by imaging: definition of the background

Christ Ftaclas, Andreas Nonnenmacher, Anthony Grusczak, Richard Terrile, Steven Pravdo

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176817

KEYWORDS: Planets, Diffraction, Telescopes, Light scattering, Point spread functions, Digital filtering, Stars, Exoplanets, Signal to noise ratio, Sensors

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Proceedings Article | 1 June 1994 Paper

Paper

Astrometric imaging telescope optical system

Steven Pravdo, Stuart Shaklan, Richard Terrile, Christ Ftaclas, Andreas Nonnenmacher, George Gatewood, Eugene Levy

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176201

KEYWORDS: Stars, Imaging systems, Telescopes, Coronagraphy, Mirrors, Space telescopes, Planets, Contamination, Optical design, Charge-coupled devices

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Proceedings Article | 1 June 1994 Paper

Paper

CoCo: an infrared cold coronagraph for astronomical observations

Shu-i Wang, Pamela Owensby, Douglas Toomey, Robert Brown, Werner Stahlberger, Charles Cavedoni, Rong Hua, Christ Ftaclas

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176765

KEYWORDS: Telescopes, Coronagraphy, Diffraction, Cameras, Infrared telescopes, Infrared radiation, Lens design, Infrared imaging, Light scattering, Imaging systems

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Proceedings Article | 11 December 1992 Paper

Paper

Polarization sensitivity analysis of an earth remote-sensing instrument: the MODIS-N Phase B study

Eugene Waluschka, Peter Silverglate, Christ Ftaclas, Aaron Turner

Proceedings Volume 1746, (1992) https://doi.org/10.1117/12.138777

KEYWORDS: Polarization, Dielectric polarization, Mirrors, MODIS, Remote sensing, Polarization analysis, Coating, Telescopes, Reflection, Short wave infrared radiation

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Proceedings Article | 1 July 1990 Paper

Paper

Fundamental limitations on off-axis performance of phased telescope arrays

James Harvey, Christ Ftaclas

Proceedings Volume 1236, (1990) https://doi.org/10.1117/12.19211

KEYWORDS: Telescopes, Monochromatic aberrations, Space telescopes, Phased arrays, Wavefronts, Error analysis, Phased array optics, Imaging arrays, Image quality, Optical telescopes

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SPIE Journal Paper | 1 June 1990

Imaging capabilities of normal-incidence x-ray telescopes

James Harvey, William Zmek, Christ Ftaclas

OE, Vol. 29, Issue 06, (June 1990) https://doi.org/10.1117/12.10.1117/12.55646

KEYWORDS: X-ray telescopes, Reflectivity, X-ray technology, X-rays, Spatial frequencies, Optical fabrication, Reflector telescopes, Optical design, Grazing incidence

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Showing 5 of 25 publications

Conference Committee Involvement (2)

High-Contrast Imaging for Exo-Planet Detection

23 August 2002 | Waikoloa, Hawai'i, United States

Interferometry for Optical Astronomy II

22 August 2002 | Waikoloa, Hawai'i, United States

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