Mr. John A. Wellman Profile

John A. Wellman

President, Metenco LLC

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 11 August 2021 Presentation + Paper

Presentation + Paper

Demonstration of a modular, scalable, laser communication terminal for human spaceflight missions

Steven Gillmer, Corrie Smeaton, Jamie Burnside, James Torres, William Hubbard, Casey Bennett, Catherine DeVoe, John Wellman, Justin Rey, Michael Zervas, Farzana Khatri, Tina Shih, Owen Guldner, Mark Padula, Bryan Robinson

Proceedings Volume 11816, 118160E (2021) https://doi.org/10.1117/12.2599014

KEYWORDS: Laser communications, Mirrors, Optical tracking, Relays, Optical design, Wavefronts, Spaceflight missions, Satellites, Optical communications, Optomechanical design

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Proceedings Article | 30 August 2019 Presentation + Paper

Presentation + Paper

Anomalous behavior of Transiting Exoplanet Survey Satellite (TESS) optical assembly: root cause investigation reveals crystallization of RTV 566 at low temperatures

John Wellman, Todd Mower, Keith Doyle

Proceedings Volume 11100, 111000G (2019) https://doi.org/10.1117/12.2529227

KEYWORDS: Crystals, Temperature metrology, Cameras, Optical fabrication, Data modeling, Glasses, Polymers, Telescopes, Finite element methods, Silicon

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Proceedings Article | 3 May 2013 Paper

Paper

Adaptive x-ray optics development at AOA-Xinetics

Charles Lillie, Jeff Cavaco, Audrey Brooks, Kevin Ezzo, David Pearson, John Wellman

Proceedings Volume 8777, 877717 (2013) https://doi.org/10.1117/12.2017461

KEYWORDS: Mirrors, Actuators, X-ray optics, X-rays, Spatial frequencies, Adaptive optics, X-ray telescopes, Deformable mirrors, Silicon, Grazing incidence

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Proceedings Article | 15 October 2012 Paper

Paper

Adaptive x-ray optics development at AOA-Xinetics

Charles Lillie, David Pearson, Jeffrey Cavaco, Audrey Plinta, John Wellman

Proceedings Volume 8503, 85030B (2012) https://doi.org/10.1117/12.958953

KEYWORDS: Mirrors, Actuators, X-ray optics, X-rays, Spatial frequencies, Adaptive optics, X-ray telescopes, Deformable mirrors, Grazing incidence, Silicon

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Proceedings Article | 15 September 2011 Paper

Paper

A low cost, high performance, 1.2m off-axis telescope built with NG-Xinetics silicon carbide

Justin Rey, John Wellman, Richard Egan, Richard Wollensak

Proceedings Volume 8146, 81460N (2011) https://doi.org/10.1117/12.893846

KEYWORDS: Mirrors, Silicon carbide, Space telescopes, Telescopes, Polishing, Optical instrument design, Phase modulation, Manufacturing, Metrology, Surface finishing

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Proceedings Article | 30 January 2004 Paper

Paper

Highly adaptive integrated meniscus primary mirrors

Mark Ealey, John Wellman

Proceedings Volume 5166, (2004) https://doi.org/10.1117/12.512728

KEYWORDS: Mirrors, Silicon carbide, Actuators, Polishing, Manufacturing, Optics manufacturing, Control systems, Disk lasers, Beryllium, Space mirrors

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Proceedings Article | 28 July 1997 Paper

Paper

CERAFORM SiC: roadmap to 2 m and 2 kg/m2 areal density

Mark Ealey, John Wellman, Gerald Weaver

Proceedings Volume 10289, 1028906 (1997) https://doi.org/10.1117/12.284709

KEYWORDS: Silicon carbide, Mirrors, Polishing, Tolerancing, Distortion, Thermography, Laser applications, Laser stabilization, Laser energy, Cryogenics

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Proceedings Article | 20 November 1996 Paper

Paper

New developments in PMN-based multilayer actuators

Mark Ealey, Charles Pohlhammer, John Wellman

Proceedings Volume 2865, (1996) https://doi.org/10.1117/12.259038

KEYWORDS: Actuators, Ceramics, Ferroelectric materials, Electrodes, Semiconducting wafers, Epoxies, Lead, Magnesium, Composites, Temperature metrology

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Proceedings Article | 11 November 1996 Paper

Paper

Polishability of CERAFORM silicon carbide

Mark Ealey, John Wellman

Proceedings Volume 2857, (1996) https://doi.org/10.1117/12.258290

KEYWORDS: Silicon carbide, Silicon, Polishing, Surface finishing, Mirrors, Diamond, Abrasives, Beryllium, Cryogenics, Cladding

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Proceedings Article | 11 November 1996 Paper

Paper

Ultralightweight silicon carbide mirror design

Mark Ealey, John Wellman

Proceedings Volume 2857, (1996) https://doi.org/10.1117/12.258289

KEYWORDS: Silicon carbide, Mirrors, Silicon, Beryllium, Glasses, Cryogenics, Aluminum, Lightweight mirrors, Temperature metrology, Polishing

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Proceedings Article | 31 May 1994 Paper

Paper

Xinetics low-cost deformable mirrors with actuator replacement cartridges

Mark Ealey, John Wellman

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176104

KEYWORDS: Actuators, Mirrors, Deformable mirrors, Ferroelectric materials, Astronomy, Adaptive optics, Polishing, Aerospace engineering, Surface finishing, Safety

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Proceedings Article | 25 August 1993 Paper

Paper

Engineering model development and test results

John Wellman

Proceedings Volume 1920, (1993) https://doi.org/10.1117/12.152674

KEYWORDS: Mirrors, Actuators, Glasses, Optical alignment, Hubble Space Telescope, Optical benches, Packaging, Space telescopes, Space mirrors, Atomic force microscopy

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Proceedings Article | 25 August 1993 Paper

Paper

Structural considerations for the Wide-Field/Planetary Camera II articulating fold mirror

Paul MacNeal, Robert Bamford, John Wellman

Proceedings Volume 1920, (1993) https://doi.org/10.1117/12.152676

KEYWORDS: Mirrors, Atomic force microscopy, Actuators, Safety, Cameras, Structural design, Vibrometry, Transducers, Optical fabrication, Monochromatic aberrations

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Proceedings Article | 25 February 1993 Paper

Paper

Cooled ISOFLOW laser mirrors

Mark Ealey, John Wellman

Proceedings Volume 1739, (1993) https://doi.org/10.1117/12.140500

KEYWORDS: Mirrors, Silicon carbide, Silicon, Distortion, Glasses, Polishing, Crystals, Surface finishing, Interfaces, Liquids

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Proceedings Article | 13 January 1992 Paper

Paper

Deformable mirrors: design fundamentals, key performance specifications, and parametric trades

Mark Ealey, John Wellman

Proceedings Volume 1543, (1992) https://doi.org/10.1117/12.51167

KEYWORDS: Actuators, Mirrors, Wavefronts, Deformable mirrors, Control systems, Adaptive optics, Optical components, Zernike polynomials, Servomechanisms, Segmented mirrors

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Showing 5 of 15 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 23 August 2010

Adaptive X-Ray Optics

Conference Committee Involvement (1)

Adaptive X-Ray Optics

3 August 2010 | San Diego, California, United States

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