Prof. John T. McGraw Profile

Prof. John T. McGraw

Professor at J. T. McGraw and Associates, LLC

SPIE Involvement:

Author

Proceedings Article | 27 August 2022 Presentation + Paper

Enabling new discoveries by enhancing current and future telescopes with CSTARS: the calibration satellite for traceable astrophysical radiometric standards

Dmitry Vorobiev, Peter Zimmer, Destry Dewitt, Dean Hines, John McGraw

Proceedings Volume 12180, 1218009 (2022) https://doi.org/10.1117/12.2629467

KEYWORDS: Calibration, Stars, Telescopes, Sensors, Satellites, Atmospheric modeling, Spectral resolution, Signal to noise ratio, Radiometry, Earth's atmosphere

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Proceedings Article | 27 July 2016 Paper

Development of vertical external cavity surface emitting lasers (VECSELs) for use as monochromatic and polychromatic sodium guidestars

Shawn Hackett, Alexander Albrecht, Zhou Yang, Jeffrey Cederberg, Mansoor Sheik-Bahae, John McGraw, Robert Johnson, Jeff Richey

Proceedings Volume 9909, 99095R (2016) https://doi.org/10.1117/12.2239240

KEYWORDS: Sodium guide stars, Laser guide stars, Vertical external cavity surface emitting lasers, Sodium, Continuous wave operation, Lamps, Absorption, Fabry–Perot interferometers, High power lasers

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Proceedings Article | 17 September 2012 Paper

New instruments to calibrate atmospheric transmission

Peter Zimmer, John McGraw, Daniel Zirzow, Claire Cramer, Keith Lykke, John Woodward

Proceedings Volume 8444, 84441L (2012) https://doi.org/10.1117/12.926609

KEYWORDS: Calibration, Stars, Telescopes, Atmospheric modeling, Earth's atmosphere, LIDAR, Spectral calibration, Sensors, Receivers, Spectrophotometry

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Proceedings Article | 17 September 2012 Paper

Surface layer turbulence measurements on the LSST site El Peñon using microthermal sensors and the lunar scintillometer LuSci

J. Sebag, P. Zimmer, J. Turner, J. McGraw, V. Krabbendam, A. Tokovinin, Edison Bustos, M. Warner, O. Wiecha

Proceedings Volume 8444, 844469 (2012) https://doi.org/10.1117/12.927017

KEYWORDS: Sensors, Telescopes, Turbulence, Large Synoptic Survey Telescope, Stereolithography, Electroluminescence, Optical turbulence, Observatories, Data acquisition, Resistance

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Proceedings Article | 13 September 2012 Paper

Near-field calibration of an objective spectrophotometer to NIST radiometric standards for the creation and maintenance of standard stars for ground- and space-based applications

John McGraw, Peter Zimmer, Daniel Zirzow, John Woodward, Keith Lykke, Claire Cramer, Susana Deustua, Dean Hines

Proceedings Volume 8450, 84501S (2012) https://doi.org/10.1117/12.927296

KEYWORDS: Calibration, Sensors, Stars, Telescopes, Spectral resolution, Charge-coupled devices, Collimators, Optical filters, Near field, Spectral calibration

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Proceedings Article | 4 August 2010 Paper

Pancake ELT: a practical design for an Extremely Large Telescope

Mark Ackermann, John McGraw, Peter Zimmer

Proceedings Volume 7733, 773320 (2010) https://doi.org/10.1117/12.857062

KEYWORDS: Mirrors, Telescopes, Spherical lenses, Aspheric lenses, Large telescopes, Optical design, Optical instrument design, Monochromatic aberrations, Image quality, Optical telescopes

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Proceedings Article | 28 July 2010 Paper

Optical design of the CCD/Transit Instrument with Innovative Instrumentation (CTI-II) Telescope

Mark Ackermann, John McGraw, Malcolm MacFarlane, Tom Williams, Peter Zimmer, Walter Gerstle, Francisco Roybal

Proceedings Volume 7733, 773311 (2010) https://doi.org/10.1117/12.856066

KEYWORDS: Telescopes, Distortion, Lens design, Optical instrument design, Image quality, Mirrors, Space telescopes, Optical design, Optical imaging, Spherical lenses

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Proceedings Article | 22 July 2010 Paper

Ground-based observatory operations optimized and enhanced by direct atmospheric measurements

John McGraw, Peter Zimmer, Mark Ackermann, Dean Hines, Anthony Hull, Lisa Rossmann, Daniel Zirzow, Steven Brown, Gerald Fraser, Keith Lykke, Allan Smith, Christopher Stubbs, John Woodward

Proceedings Volume 7739, 773929 (2010) https://doi.org/10.1117/12.857787

KEYWORDS: Telescopes, Astronomy, Earth's atmosphere, LIDAR, Observatories, Calibration, Space telescopes, Stars, Atmospheric modeling, Focus stacking software

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Proceedings Article | 21 July 2010 Paper

Space-based photometric precision from ground-based telescopes

Peter Zimmer, John Mcgraw, Mark Ackermann, Dean Hines, Anthony Hull, Lisa Rossmann, Daniel Zirzow, Steven Brown, Claire Cramer, Gerald Fraser, Keith Lykke, Allan Smith, Christopher Stubbs, John Woodward

Proceedings Volume 7735, 77358D (2010) https://doi.org/10.1117/12.857700

KEYWORDS: Calibration, Telescopes, Stars, Aerosols, Atmospheric particles, Atmospheric modeling, LIDAR, Clouds, Absorption, Scattering

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Proceedings Article | 4 September 2009 Paper

A proposed global atmospheric monitoring network based on standard stars

John McGraw, Peter Zimmer, Steven Brown, Gerald Fraser, Keith Lykke, Allan Smith, Christopher Stubbs, John Woodward

Proceedings Volume 7453, 74530K (2009) https://doi.org/10.1117/12.831213

KEYWORDS: Stars, Calibration, Earth's atmosphere, Atmospheric modeling, Telescopes, Climate change, Atmospheric particles, Spectrophotometry, Atmospheric monitoring, Absorption

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Proceedings Article | 11 September 2008 Paper

Improved spherical aberration corrector for fast spherical primary mirrors

Mark Ackermann, John McGraw, Peter Zimmer

Proceedings Volume 7061, 70610I (2008) https://doi.org/10.1117/12.791666

KEYWORDS: Mirrors, Spherical lenses, Aspheric lenses, Monochromatic aberrations, Telescopes, Image quality, Image quality standards, Large telescopes, Optical design, Space telescopes

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Proceedings Article | 29 August 2008 Paper

Five-lens corrector for Cassegrain-form telescopes

Mark Ackermann, John McGraw, Peter Zimmer

Proceedings Volume 7060, 70600D (2008) https://doi.org/10.1117/12.792089

KEYWORDS: Telescopes, Mirrors, Distortion, Aspheric lenses, Spherical lenses, Image quality, Optical instrument design, Lens design, Space telescopes, Refractor telescopes

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Proceedings Article | 30 June 2006 Paper

LIDAR for measuring atmospheric extinction

M. Dawsey, G. Gimmestad, D. Roberts, J. McGraw, P. Zimmer, J. Fitch

Proceedings Volume 6270, 62701F (2006) https://doi.org/10.1117/12.673110

KEYWORDS: LIDAR, Focus stacking software, Receivers, Telescopes, Observatories, Transmitters, Eye, Aerosols, Astronomy, Atmospheric particles

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Proceedings Article | 23 June 2006 Paper

The second-generation CCD/Transit Instrument (CTI-II) precision astrometric and photometric survey

John McGraw, Mark Ackermann, Walter Gerstle, Tom Williams, Peter Zimmer

Proceedings Volume 6267, 62673T (2006) https://doi.org/10.1117/12.672496

KEYWORDS: Telescopes, Stars, Charge-coupled devices, Calibration, Clocks, Sensors, Photometry, Refraction, Point spread functions, Astronomy

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Proceedings Article | 23 June 2006 Paper

Are curved focal planes necessary for wide-field survey telescopes?

Mark Ackermann, John McGraw, Peter Zimmer

Proceedings Volume 6267, 626740 (2006) https://doi.org/10.1117/12.670521

KEYWORDS: Telescopes, Charge-coupled devices, Space telescopes, Large Synoptic Survey Telescope, Optical instrument design, Image quality, Optical design, Mirrors, Quantum efficiency, Imaging systems

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Showing 5 of 15 publications

Conference Committee Involvement (1)

Astronomical and Space Optics

10 April 2000 | Albuquerque, NM, United States

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