Colleagues

John M. Green – Xiomas President / Principal Investigator
John Green is a Xiomas co-owner and founder. He has worked in the airborne imaging business for 20+ years as a product engineer and business developer, mostly for Argon ST (formerly Daedalus Enterprises). Green has been involved in the development and operation of a number of instruments in use throughout the world including the MODIS Airborne Simulator (MAS) operated by NASA Ames Research Center, the MIVIS hyperspectral sensor operated by CNR in Italy, the Large Area Fast Spectrometer operated by the U.S. Marines, and the Airborne Multispectral Scanner operated by the U.S. DoD.

David B. Rein – Xiomas Software Engineer
Dave Rein is a Xiomas co-owner, founder, and computer engineer. He has 35 years of experience in the design and development of data acquisition and airborne imaging systems. Rein’s areas of expertise include: development of real time imbedded controllers, image processing, HW/SW interface programming, and DSP/FPGA software engineering. Rein received a BS EE from the University of Michigan in 1971.

Mike Coffman – Xiomas Controller and Compliance Officer
Mike Coffman has an over 30-year career of holding controller positions in the software, aviation, and equipment rental industries. Coffman has a Bachelor of Science degree in Computer Information Systems from Ferris State University, a Master of Science degree in accounting from Walsh College, and a second Master of Science degree in finance from Walsh College. During his time away from work he enjoys spending quality time with his wife and son at their cabin in northern Michigan.

Tom Ryan – Xiomas Optical Engineer
Tom Ryan has 30+ years of designing optical and opto-mechanical devices. Ryan has a BS in Physics and Astronomy (double major) from the University of Michigan, 1976, and is proficient in Zemax Optical Design, FRED Stray Light Analysis, Solid Edge Mechanical CAD Design, Femap with NX Nastran FEA Program. Ryan has extensive experience with making, testing, and assembling optics and optical assemblies including experience developing optical systems for space-based instruments.

Nate Schambach – Xiomas Systems Engineer
Nate Schambach has seven years of work experience in system, product, and mechanical engineering. Schambach has a double-major BS in Biomedical Engineering and Applied Mathematics and Statistics from Johns Hopkins University and an MSE in Mechanical Engineering and a Masters of Management from the University of Michigan. His proficiencies include Simulation and Optimization, 3D Design and Analysis, and Mechatronics Testing.

Fred Osterwisch – Principal Investigator Emeritus
Fred Osterwisch serves in a consulting role in the areas of customer liaison, proposal development, and staff mentoring. Osterwisch began his career at the U of M Willow Run Labs six decades ago and moved on from there to several positions at Daedalus Enterprises as the Engineering Group Manager, Director of Operations, and as the Principal Investigator on three NASA-funded SBIR research projects, developing multispectral and hyperspectral airborne sensors. In 2011 Osterwisch transitioned the former Daedalus Enterprises into DaedalusScanners LLC where he served as President until his semi-retirement in 2023.

Eamonn Reilly – Xiomas R&D Engineer
Eamonn Reilly has his BSE in Aerospace Engineering from the University of Michigan, 2024. He focuses on system testing, analysis, and concept development. Eamonn has a strong love for all things aerospace, with a particular affinity for aerodynamics and a growing interest in optics.