Mr. Victor Isbrucker Profile

Victor Isbrucker

Hardware Engineering Manager at Isbrucker Consulting Inc.

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Author

Professional interests include optical system design and engineering. Particular areas of interest are lens design, illumination and non-imaging design, tolerance analysis, and stray light analysis. I also have a general interest in the modeling and analysis of optical systems.

Proceedings Article | 12 July 2019 Open Access

Stray light solution for GHGSAT nanosatellite

Vincent Latendresse, Dina Katsir, Keren Shabtai, Jason McKeever, Victor Isbrucker, Jonathan Lavoie, Roman Kruzelecky, Wes Jamroz

Proceedings Volume 11180, 111807W (2019) https://doi.org/10.1117/12.2536203

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Proceedings Article | 9 August 2016 Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: multi-tiered wavefront measurements and novel mechanical design

Jennifer Dunn, David Andersen, Edward Chapin, Vlad Reshetov, Ramunas Wierzbicki, Glen Herriot, Dean Chalmer, Victor Isbrucker, James Larkin, Anna Moore, Ryuji Suzuki

Proceedings Volume 9908, 9908A9 (2016) https://doi.org/10.1117/12.2234030

KEYWORDS: Thirty Meter Telescope, Interfaces, IRIS Consortium, Adaptive optics, Wavefront sensors, Wavefronts, Stars, Real-time computing, Sensors, Imaging systems

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The InfraRed Imaging Spectrograph (IRIS) will be the first light adaptive optics instrument on the Thirty Meter Telescope (TMT). IRIS is being built by a collaboration between Caltech, the University of California, NAOJ and NRC Herzberg. In this paper we present novel aspects of the Support Structure, Rotator and On-Instrument Wavefront Sensor systems being developed at NRC Herzberg. IRIS is suspended from the bottom port of the Narrow Field Infrared Adaptive Optics System (NFIRAOS), and provides its own image de-rotation to compensate for sidereal rotation of the focal plane. This arrangement is a challenge because NFIRAOS is designed to host two other science instruments, which imposes strict mass requirements on IRIS. As the mechanical design of all elements has progressed, we have been tasked with keeping the instrument mass under seven tonnes. This requirement has resulted in a mass reduction of 30 percent for the support structure and rotator compared to the most recent IRIS designs. To accomplish this goal, while still being able to withstand earthquakes, we developed a new design with composite materials. As IRIS is a client instrument of NFIRAOS, it benefits from NFIRAOS’s superior AO correction. IRIS plays an important role in providing this correction by sensing low-order aberrations with three On-Instrument Wavefront Sensors (OIWFS). The OIWFS consists of three independently positioned natural guide star wavefront sensor probe arms that patrol a 2-arcminute field of view. We expect tip-tilt measurements from faint stars within the IRIS imager focal plane will further stabilize the delivered image quality. We describe how the use of On-Detector Guide Windows (ODGWs) in the IRIS imaging detector can be incorporated into the AO correction. In this paper, we present our strategies for acquiring and tracking sources with this complex AO system, and for mitigating and measuring the various potential sources of image blur and misalignment due to properties of the mechanical structure and interfaces.

Proceedings Article | 21 September 2012 Paper

Stray light control for asteroid detection at low solar elongation for the NEOSSat micro-satellite telescope

Victor Isbrucker, John Stauder, Denis Laurin, Allan Hollinger

Proceedings Volume 8442, 84424J (2012) https://doi.org/10.1117/12.925488

KEYWORDS: Zemax, Stray light, Telescopes, Space telescopes, Sun, Satellites, Asteroids, Stray light analysis, Charge-coupled devices, Space operations

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Proceedings Article | 12 July 2008 Paper

Cryogenic pupil alignment test architecture for the James Webb Space Telescope integrated science instrument module

Brent Bos, David Kubalak, Scott Antonille, Raymond Ohl, John Hagopian, Pamela Davila, Joseph Sullivan, Michael Sánchez, Derek Sabatke, Robert Woodruff, Maurice te Plate, Clinton Evans, Victor Isbrucker, Stephen Somerstein, Martyn Wells, Samuel Ronayette

Proceedings Volume 7010, 70103C (2008) https://doi.org/10.1117/12.789808

KEYWORDS: James Webb Space Telescope, Mirrors, Sensors, Observatories, Optical components, Reflectivity, Cryogenics, Stray light, Beam splitters, Infrared telescopes

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