Dr. Volker Tolls Profile

Dr. Volker Tolls

Astronomer at Harvard-Smithsonian Ctr for Astrophysics

SPIE Involvement:

Author

Publications (22)

Proceedings Article | 24 August 2024 Presentation

Presentation

FIRSST: heterodyne spectroscopy instrument

Martina Wiedner, Andrey Baryshev, Paul Grimes, Asantha Cooray, Meredith MacGregor, Uma Gorti, Ron Vervack, Victor Belitsky, Vincent Desmaris, Yan Delorme, Juan-Daniel Gallego, Paul Hartogh, Cornelia Honingh, Bernd Klein, Jean-Michel Krieg, Gary Melnick, Sebastiano Ligori, Boon-Kok Tan, Bertrand Thomas, Volker Tolls, Jeanne Treuttel, Jérôme Valentin, David Clements, Ray Blundell, Martin Cordiner, Brandt Gaches, Cristina Gracia Miro, Maryvonne Gerin, Leslie Hunt, David Neufeld, Tushara Pillai, Maxime Ruaud, Silvia Spezzano, Floris van der Tak

Proceedings Volume 13092, 130920I (2024) https://doi.org/10.1117/12.3019824

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Proceedings Article | 17 August 2024 Poster

Poster

The planetary origins and evolution multispectral monochrometer (POEMM)

Gordon Stacey, Dana Anderson, Richard Arendt, Andrea Banzatti, Jochem Baselmans, Edwin Bergin, Jennifer Bergner, Gordon Bjoraker, Christine Chen, Lauren Cleeves, Nicholas Cothard, Shahab Dabironezare, Lorenza Ferrari, Matthew Greenhouse, Willem Jellema, Attila Kovacs, Alexander Kutyrev, Meredith MacGregor, Gary Melnick, Stephanie Milam, Thomas Nikola, Klaus Pontoppidan, Isabel Rebollido Vazquez, Karwan Rostem, H. Phillip Stahl, Alexander Thelen, Volker Tolls, Leon Trapman, Edwin Wollack, Ke Zhang

Proceedings Volume PC13102, PC131021G (2024) https://doi.org/10.1117/12.3020519

Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

SPHEREx: NASA's near-infrared spectrophotometric all-sky survey

Brendan Crill, Michael Werner, Rachel Akeson, Matthew Ashby, Lindsey Bleem, James Bock, Sean Bryan, Jill Burnham, Joyce Byunh, Tzu-Ching Chang, Yi-Kuan Chiang, Walter Cook, Asantha Cooray, Andrew Davis, OIivier Doré, C. Darren Dowell, Gregory Dubois-Felsmann, Tim Eifler, Andreas Faisst, Salman Habib, Chen Heinrich, Katrin Heitmann, Grigory Heaton, Christopher Hirata, Viktor Hristov, Howard Hui, Woong-Seob Jeong, Jae Hwan Kang, Branislav Kecman, J. Davy Kirkpatrick, Phillip Korngut, Elisabeth Krause, Bomee Lee, Carey Lisse, Daniel Masters, Philip Mauskopf, Gary Melnick, Hiromasa Miyasaka, Hooshang Nayyeri, Hien Nguyen, Karin Öberg, Steve Padin, Roberta Paladini, Milad Pourrahmani, Jeonghyun Pyo, Roger Smith, Yong-Seong Song, Teresa Symons, Harry Teplitz, Volker Tolls, Steve Unwin, Rogier Windhorst, Yujin Yang, Michael Zemcov

Proceedings Volume 11443, 114430I (2020) https://doi.org/10.1117/12.2567224

KEYWORDS: Galactic astronomy, Telescopes, Astrophysics, Spectral resolution, Absorption, Stars, Spectroscopes, Detector arrays, Beam splitters, Optical filters

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Proceedings Article | 10 July 2018 Paper

Paper

The hunt for Sirius Ab: comparison of algorithmic sky and PSF estimation performance in deep coronagraphic thermal-IR high contrast imaging

Joseph Long, Jared Males, Katie Morzinski, Laird Close, Frans Snik, Matthew Kenworthy, Gilles P. Otten, John Monnier, Volker Tolls, Alycia Weinberger

Proceedings Volume 10703, 107032T (2018) https://doi.org/10.1117/12.2312874

KEYWORDS: Point spread functions, Coronagraphy, Stray light, Sensors, Telescopes, Stars, Principal component analysis, Exoplanets, Imaging systems, Observatories

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

SPHEREx: an all-sky NIR spectral survey

Phillip Korngut, James Bock, Rachel Akeson, Matthew Ashby, Lindsey Bleem, Justin Boland, Douglas Bolton, Samuel Bradford, David Braun, Sean Bryan, Peter Capak, Tzu-Ching Chang, Andrew Coffey, Asantha Cooray, Brendan Crill, Olivier Doré, Tim Eifler, Chang Feng, Salman Habib, Katrin Heitmann, Shoubaneh Hemmati, Christopher Hirata, Woong-Seob Jeong, Minjin Kim, Davy Kirkpatrick, Theresa Kowalkowski, Elisabeth Krause, Carey Lisse, Philip Mauskopf, Daniel Masters, James McGuire, Gary Melnick, Hein Nguyen, Hooshang Nayyeri, Karin Oberg, Roland dePutter, William Purcell, Jennifer Rocca, Marcus Runyan, Karin Sandstrom, Roger Smith, Yong-Seon Song, Nathaniel Stickley, Jeremy Stober, Sara Susca, Harry Teplitz, Volker Tolls, Stephen Unwin, Michael Werner, Rogier Windhorst, Michael Zemcov

Proceedings Volume 10698, 106981U (2018) https://doi.org/10.1117/12.2312860

KEYWORDS: Staring arrays, Prototyping, Sensors, Space operations, Space telescopes, Telescopes, Galactic astronomy, Mirrors, Near infrared, Astronomy

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SPHEREx, a mission in NASA’s Medium Explorer (MIDEX) program recently selected for Phase-A implementation, is an all-sky survey satellite that will produce a near-infrared spectrum for every 6 arcsecond pixel on the sky. SPHEREx has a simple, high-heritage design with large optical throughput to maximize spectral mapping speed. While the legacy data products will provide a rich archive of spectra for the entire astronomical community to mine, the instrument is optimized for three specific scientific goals: to probe inflation through the imprint primordial non-Gaussianity left on today’s large-scale cosmological structure; to survey the Galactic plane for water and other biogenic ices through absorption line studies; and to constrain the history of galaxy formation through power spectra of background fluctuations as measured in deep regions near the ecliptic poles. The aluminum telescope consists of a heavily baffled, wide-field off-axis reflective triplet design. The focal plane is imaged simultaneously by two mosaics of H2RG detector arrays separated by a dichroic beamsplitter. SPHEREx assembles spectra through the use of mass and volume efficient linear variable filters (LVFs) included in the focal plane assemblies, eliminating the need for any dispersive or moving elements. Instead, spectra are constructed through a series of small steps in the spacecraft attitude across the sky, modulating the location of an object within the FOV and varying the observation wavelength in each exposure. The spectra will cover the wavelength range between 0.75 and 5.0 µm at spectral resolutions ranging between R=35 and R=130. The entire telescope is cooled passively by a series of three V-groove radiators below 80K. An additional stage of radiative cooling is included to reduce the long wavelength focal plane temperature below 60K, controlling the dark current. As a whole, SPHEREx requires no new technologies and carries large technical and resource margins on every aspect of the design.

Proceedings Article | 21 July 2014 Paper

Paper

Direct imaging of exoplanets in the habitable zone with adaptive optics

Jared Males, Laird Close, Olivier Guyon, Katie Morzinski, Alfio Puglisi, Philip Hinz, Katherine Follette, John Monnier, Volker Tolls, Timothy Rodigas, Alycia Weinberger, Alan Boss, Derek Kopon, Ya-lin Wu, Simone Esposito, Armando Riccardi, Marco Xompero, Runa Briguglio, Enrico Pinna

Proceedings Volume 9148, 914820 (2014) https://doi.org/10.1117/12.2057135

KEYWORDS: Planets, Stars, Adaptive optics, Imaging systems, Exoplanets, Cameras, Point spread functions, Liquids, Telescopes, Space telescopes

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Proceedings Article | 24 September 2012 Paper

Paper

TIGER: a high contrast infrared imager for the Giant Magellan Telescope

Philip Hinz, Johanan Codona, Olivier Guyon, William Hoffmann, Andrew Skemer, Joseph Hora, Volker Tolls, Alan Boss, Alycia Weinberger, Paul Arbo, Thomas Connors, Olivier Durney, Thomas McMahon, Manny Montoya, Vidhya Vaitheeswaran

Proceedings Volume 8446, 84461P (2012) https://doi.org/10.1117/12.926751

KEYWORDS: Coronagraphy, Adaptive optics, Cameras, Stars, Telescopes, Speckle, Infrared telescopes, Infrared imaging, Infrared radiation, Sensors

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Proceedings Article | 6 August 2010 Paper

Paper

Visible nulling coronagraphy testbed development for exoplanet detection

Richard Lyon, Mark Clampin, Robert Woodruff, Gopal Vasudevan, Patrick Thompson, Andrew Chen, Peter Petrone, Andrew Booth, Timothy Madison, Matthew Bolcar, M. Charley Noecker, Stephen Kendrick, Gary Melnick, Volker Tolls

Proceedings Volume 7731, 77312B (2010) https://doi.org/10.1117/12.857472

KEYWORDS: Wavefronts, Coronagraphy, Nulling interferometry, Beam splitters, Planets, Space telescopes, Cameras, Algorithm development, Telescopes, Reflectivity

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Proceedings Article | 26 August 2009 Paper

Paper

Visible nulling coronagraph testbed results

Richard Lyon, Mark Clampin, Robert Woodruff, Gopal Vasudevan, Patrick Thompson, Peter Petrone, Timothy Madison, Maxime Rizzo, Gary Melnick, Volker Tolls

Proceedings Volume 7440, 744011 (2009) https://doi.org/10.1117/12.827423

KEYWORDS: Planets, Coronagraphy, Nulling interferometry, Algorithm development, Image segmentation, Visible radiation, Optical filters, Phase shifts, Stars, Point spread functions

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Proceedings Article | 20 August 2009 Paper

Paper

FIB machining of occulting masks for imaging of extrasolar planets

Shilpa Raja, Michael Aziz, James Foley, Volker Tolls

Proceedings Volume 7440, 744018 (2009) https://doi.org/10.1117/12.828515

KEYWORDS: Photomasks, Polymethylmethacrylate, Absorbance, Exoplanets, Refractive index, Ion beams, Coronagraphy, Polymers, Lithography, Mask making

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Proceedings Article | 12 July 2008 Paper

Paper

Extrasolar Planetary Imaging Coronagraph (EPIC): visible nulling cornagraph testbed results

Richard Lyon, Mark Clampin, Gary Melnick, Volker Tolls, Robert Woodruff, Gopal Vasudevan

Proceedings Volume 7010, 701045 (2008) https://doi.org/10.1117/12.789700

KEYWORDS: Planets, Coronagraphy, Nulling interferometry, Wavefronts, Beam splitters, Interferometers, Point spread functions, Space telescopes, Telescopes, Phase shifts

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Proceedings Article | 6 July 2006 Paper

Paper

Extrasolar planetary imaging coronagraph (EPIC)

Mark Clampin, Gary Melnick, Richard Lyon, Scott Kenyon, Dimitar Sasselov, Volker Tolls, Holland Ford, David Golimowski, Larry Petro, George Hartig, William Sparks, Garth Illingworth, Doug Lin, Sara Seager, Alycia Weinberger, Martin Harwit, Mark Marley, Jean Schneider, Michael Shao, Marty Levine, Jian Ge, Robert Woodruff

Proceedings Volume 6265, 62651B (2006) https://doi.org/10.1117/12.672849

KEYWORDS: Planets, Wavefronts, Nulling interferometry, Coronagraphy, Stars, Space telescopes, Point spread functions, Telescopes, Atmospheric physics, Atmospheric sensing

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Proceedings Article | 19 June 2006 Paper

Paper

Coronagraphic Exploration Camera (CorECam)

Mark Clampin, Richard Lyon, Larry Petro, Sara Seager, Mark Marley, Gary Melnick, Alycia Weinberger, Robert Woodruff, Scott Horner, Holland Ford, Garth Illingworth, Jim Kasting, Doug Lin, Marc Kuchner, Mike Shao, William Sparks, Bernard Rauscher, Volker Tolls, Ruth Carter

Proceedings Volume 6265, 62650O (2006) https://doi.org/10.1117/12.672816

KEYWORDS: Planets, Optical filters, Near infrared, Sensors, Cameras, Charge-coupled devices, Staring arrays, Photon counting, Imaging systems, Planetary systems

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Proceedings Article | 15 June 2006 Paper

Paper

Study of coronagraphic techniques

Volker Tolls, Michael Aziz, Robert Gonsalves, Sylvain Korzennik, Antoine Labeyrie, Richard Lyon, Gary Melnick, Ruth Schlitz, Steve Somerstein, Gopal Vasudevan, Robert Woodruff

Proceedings Volume 6265, 62653K (2006) https://doi.org/10.1117/12.672647

KEYWORDS: Coronagraphy, Manufacturing, Speckle, Sensors, Scanners, Absorbance, Microelectromechanical systems, Beam propagation method, Observatories, Ion beams

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Proceedings Article | 13 June 2006 Paper

Paper

A nulling coronagraph for TPF-C

Michael Shao, Bruce Levine, James Wallace, Glenn Orton, Edouard Schmidtlin, Benjamin Lane, Sara Seager, Volker Tolls, Richard Lyon, Rocco Samuele, Domenick Tenerelli, Robert Woodruff, Jian Ge

Proceedings Volume 6265, 626517 (2006) https://doi.org/10.1117/12.671934

KEYWORDS: Coronagraphy, Planets, Interferometers, Stars, Nulling interferometry, Optical fibers, Calibration, Wavefronts, Telescopes, Mirrors

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Proceedings Article | 5 October 2005 Paper

Paper

Study of high-performance coronagraphic techniques

Volker Tolls, Michael Aziz, Robert Gonsalves, Sylvain Korzennik, Antoine Labeyrie, Richard Lyon, Gary Melnick, Steve Somerstein, Gopal Vasudevan, Robert Woodruff

Proceedings Volume 5905, 59051M (2005) https://doi.org/10.1117/12.639422

KEYWORDS: Speckle, Coronagraphy, Photomasks, Manufacturing, Planets, Mirrors, Spherical lenses, Ion beams, Wavefronts, Device simulation

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Proceedings Article | 14 September 2005 Paper

Paper

Phase diversity in an exo-planet imager

Robert Gonsalves, Volker Tolls

Proceedings Volume 5905, 590510 (2005) https://doi.org/10.1117/12.628734

KEYWORDS: Planets, Speckle, Point spread functions, Imaging systems, Coronagraphy, Image processing, Phase retrieval, Sun, Telescopes, Speckle pattern

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Proceedings Article | 12 October 2004 Paper

Paper

Extrasolar Planetary Imaging Coronagraph (EPIC)

Mark Clampin, Gary Melnick, Richard Lyon, Holland Ford, J. Roger Angel, Daniel Gezari, David Golimowski, George Hartig, Martin Harwit, Matt Holman, Garth Illingworth, Scott Kenyon, Douglas Lin, Mark Marley, Scot Olivier, Larry Petro, Dimitar Sasselov, Jean Schneider, Sara Seager, Michael Shao, William Sparks, Volker Tolls, Alycia Weinberger, Hsiao Smith, Ruth Carter, Robert Woodruff, Brent Hyatt, Stephen Kendrick, David Purmot

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552314

KEYWORDS: Planets, Coronagraphy, Telescopes, Mirrors, Wavefronts, Stars, Space telescopes, Nulling interferometry, Solar system, Imaging systems

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Proceedings Article | 17 February 2003 Paper

Paper

Toward very large bandwidth with acousto-optical spectrometers

Rudolf Schieder, Oliver Siebertz, Csaba Gal, Michael Olbrich, Frank Schloeder, R. Bieber, Frank Schmuelling, Volker Tolls, Jochen Horn

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459151

KEYWORDS: Fabry–Perot interferometers, Spectrometers, Acousto-optics, Acoustics, Charge-coupled devices, Adaptive optics, Crystals, Modulation, Signal detection, Calibration

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Proceedings Article | 6 December 1999 Paper

Paper

SWAS-AOS: the first acousto-optical spectrometer in space

Johannes Frerick, Markus Klumb, Rudolf Schieder, Volker Tolls, Gisbert Winnewisser

Proceedings Volume 3759, (1999) https://doi.org/10.1117/12.372692

KEYWORDS: Adaptive optics, Acousto-optics, Spectroscopy, Observatories, Charge-coupled devices, Astronomy, Electronics, Oxygen, Temperature metrology, Calibration

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Proceedings Article | 14 September 1994 Paper

Paper

Submillimeter Wave Astronomy Satellite (SWAS) acousto-optical spectrometer

Markus Klumb, Johannes Frerick, Volker Tolls, Rudolf Schieder, Gisbert Winnewisser

Proceedings Volume 2268, (1994) https://doi.org/10.1117/12.185841

KEYWORDS: Adaptive optics, Spectroscopy, Acousto-optics, Semiconductor lasers, Charge-coupled devices, Electronics, Bragg cells, Diffraction, Receivers, Extremely high frequency

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Proceedings Article | 14 September 1994 Paper

Paper

Submillimeter Wave Astronomy Satellite

Volker Tolls, Gary Melnick, Alexander Dalgarno, Giovanni Fazio, John Stauffer, Patrick Thaddeus, Neal Erickson, Ron Snell, Paul Goldsmith, Martin Harwit, David Hollenbach, David Koch, David Neufeld, Rudolf Schieder, Gisbert Winnewisser

Proceedings Volume 2268, (1994) https://doi.org/10.1117/12.185853

KEYWORDS: Clouds, Receivers, Oxygen, Mirrors, Carbon, Adaptive optics, Chemistry, Stars, Satellites, Spectroscopy

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Showing 5 of 22 publications

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