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Camera Exposure Time Determination for Artemis I Lunar FlybyDuring Artemis I, a flight test was conducted using the Optical Navigation Camera to image Lunar terrain at low altitude prior to the Return Powered Flyby (RPF) burn. The vehicle descended rapidly toward the surface and transitioned over the Lunar Terminator during the time frame in which the images were to be gathered, creating challenging lighting conditions which required the development of a novel technique for exposure time determination to gather imagery of appropriate quality for post flight analysis. The resulting technique leveraged simple photometric models and simulations, as well as the spacecrafts altitude and pointing direction to determine the necessary change in exposure times over the course of the flyby, resulting in a successful flight test.
Document ID
20240011722
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Kevin R. Kobylka
(Johnson Space Center Houston, United States)
Date Acquired
September 12, 2024
Subject Category
Instrumentation and Photography
Meeting Information
Meeting: 4th Space Imaging Workshop
Location: Atlanta, GA
Country: US
Start Date: October 7, 2024
End Date: October 9, 2024
Sponsors: Georgia Institute of Technology
Funding Number(s)
WBS: 747797.06.13.15.99.10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Terrain Relative Navigation
Optical Navigation
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