Atmospheric waves experiment (AWE) advanced mesospheric temperature mapper (AMTM) optical system design, alignment, and image quality verification

James Champagne; Roy Esplin; Tyrel Rupp; Greg Hopkins; Burt Lamborn; Erik Syrstad; Mike Holt; Matt Ralphs

doi:10.1117/12.3028142

30 September 2024 Atmospheric waves experiment (AWE) advanced mesospheric temperature mapper (AMTM) optical system design, alignment, and image quality verification

James Champagne, Roy Esplin, Tyrel Rupp, Greg Hopkins, Burt Lamborn, Erik Syrstad, Mike Holt, Matt Ralphs

Author Affiliations +

Proceedings Volume 13133, Optical System Alignment, Tolerancing, and Verification XV; 131330C (2024) https://doi.org/10.1117/12.3028142
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

The AWE AMTM is a wide field-of-view (WFOV) infrared imaging radiometer designed for use in measuring the P1(2) and P1(4) emission lines of the earths OH layer. From these measurements, the atmospheric temperature is determined and finally images of gravity waves will be produced as the AWE field of view transverses the OH layer. Designed, built, and characterized by Utah State University (USU) and its Space Dynamics Laboratory (SDL), the sensor has been externally mounted to the International Space Station (ISS) looking nadir. Images will be collected and analyzed for a minimum of two years. The optical sensor assembly, also known as the Optomechanical Assembly (OMA), consists of four identical imaging telescopes, each comprised of a fisheye optical assembly, a field lens, and a re-imager optical assembly. The four telescopes share a common filter wheel with four narrow band filters. The 16 lenses in each telescope are coaligned and bonded into five aluminum lens barrels. The detectors were aligned, supported, and thermally compensated via a titanium thermal compensator and custom focus shim attached to the aft end of each telescope. Following assembly, the OMA was environmentally tested including EMI/EMC, vibration, and thermal cycling. Prior to and following each environmental test the point response function of each telescope was measured and compared to verify no degradation of performance had occurred. This paper will present an overview of the optical design, tolerance analysis, lens alignment, detector focusing, and image quality verification testing in vacuum of the OMA.

Conference Presentation

Citation Download Citation

James Champagne, Roy Esplin, Tyrel Rupp, Greg Hopkins, Burt Lamborn, Erik Syrstad, Mike Holt, and Matt Ralphs "Atmospheric waves experiment (AWE) advanced mesospheric temperature mapper (AMTM) optical system design, alignment, and image quality verification", Proc. SPIE 13133, Optical System Alignment, Tolerancing, and Verification XV, 131330C (30 September 2024); https://doi.org/10.1117/12.3028142

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