Dr. Till W. Liepmann Profile

Dr. Till W. Liepmann

Chief Engineer at Northrop Grumman Corp

SPIE Involvement:

Author

Area of Expertise:

Systems Engineering , Opto-mechanical design and implementation , Optical design and implementation

Publications (9)

SPIE Journal Paper | 14 March 2024 Open Access

Designing a new, large, complex observatory: learning the strategic lesson of newness from our experience on the James Webb Space Telescope

Jonathan Arenberg, Tiffany Glassman, Elysia Starr, Reem Hejal, Till Liepmann, Charles Atkinson, Nina Altshuler, Annetta Luevano, Marc Roth, Perry Knollenberg

JATIS, Vol. 10, Issue 01, 011209, (March 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.011209

KEYWORDS: Design, Observatories, Telescopes, James Webb Space Telescope, Systems modeling, Space operations, Performance modeling, Online learning, Stray light, Mirrors

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Proceedings Article | 27 September 2016 Presentation + Paper

Mechanical blind gap measurement tool for alignment of the JWST Optical Telescope Element

Till Liepmann

Proceedings Volume 9951, 99510G (2016) https://doi.org/10.1117/12.2238576

KEYWORDS: Mirrors, James Webb Space Telescope, Optical alignment, Optical telescopes, Chemical elements, Optical components, Space telescopes, Calibration, Phase modulation, Prototyping

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Proceedings Article | 27 September 2016 Presentation + Paper

Data veracity checks for the alignment of the JWST optical telescope element

Josh Levi, Tiffany Glassman, Mike Farey, Till Liepmann

Proceedings Volume 9951, 995104 (2016) https://doi.org/10.1117/12.2236360

KEYWORDS: James Webb Space Telescope, Optical alignment, Optical components, Metrology, Adaptive optics, Interfaces, Mirrors, Finite element methods, LIDAR, Optical fabrication

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Proceedings Article | 29 July 2016 Paper

Alignment of the James Webb Space Telescope optical telescope element

Tiffany Glassman, Joshua Levi, Till Liepmann, Walter Hahn, Gary Bisson, Dan Porpora, Theo Hadjimichael

Proceedings Volume 9904, 99043Z (2016) https://doi.org/10.1117/12.2233792

KEYWORDS: Mirrors, James Webb Space Telescope, Optical alignment, Space telescopes, Optical components, Space telescopes, Optical telescopes, Adaptive optics, Data modeling, Telescopes, Shape memory alloys

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Proceedings Article | 18 September 2009 Paper

Cryogenic stray light testing of the James Webb Space Telescope: an easy approach

Till Liepmann

Proceedings Volume 7439, 743913 (2009) https://doi.org/10.1117/12.825087

KEYWORDS: Reflectors, James Webb Space Telescope, Stray light, Spherical lenses, Adaptive optics, Cryogenics, Optical testing, Reflectivity, Space telescopes, Mirrors

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Proceedings Article | 22 August 2009 Paper

Point symmetric design approach to a wide-field wide-wavelength cat's eye retro-reflector anastigmat

Till Liepmann

Proceedings Volume 7428, 74280G (2009) https://doi.org/10.1117/12.825314

KEYWORDS: Retroreflectors, Reflectors, Eye, Lens design, Spherical lenses, Reflectivity, Sensors, Transponders, Glasses, Diffraction

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Proceedings Article | 12 July 1999 Paper

Fiber optically coupled infrared focal plane array system for use in missile warning receiver applications

Arnold Daniels, Till Liepmann

Proceedings Volume 3701, (1999) https://doi.org/10.1117/12.352992

KEYWORDS: Staring arrays, Sensors, Relays, Fiber optics, Objectives, Receivers, Missiles, Mid-IR, Modulation transfer functions, Infrared radiation

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Proceedings Article | 25 August 1993 Paper

Wide-angle conformal IR transceiver

Till Liepmann, Michael Randall, Alan Shapiro

Proceedings Volume 1920, (1993) https://doi.org/10.1117/12.152668

KEYWORDS: Fiber optics, Lens design, Infrared radiation, Transceivers, Collimation, Infrared imaging, Collimators, Spherical lenses, Mirrors, Eye

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Proceedings Article | 1 May 1990 Paper

Laser atmospheric phase and amplitude measurement

Till Liepmann

Proceedings Volume 1221, (1990) https://doi.org/10.1117/12.18352

KEYWORDS: Phase measurement, Wavefronts, Atmospheric propagation, Modulation transfer functions, Laser beam propagation, Earth's atmosphere, Turbulence, Phase retrieval, Receivers, Fourier transforms

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Showing 5 of 9 publications

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