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Bringing the Visible Universe into Focus with Robo-AO
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EUV telescope for a Cubesat nanosatellite.
Applied Optics
|December 1, 2023
Summary
This study details a compact extreme ultraviolet telescope designed for solar corona observation at 17.14 nm. It features a Ritchey-Chrétien design with advanced multilayer coatings for high-resolution solar imaging.
Area of Science:
- Solar Physics
- Astronomy
- Optical Engineering
Background:
- The solar corona's study requires specialized instruments for extreme ultraviolet (EUV) observation.
- Compact and high-resolution telescopes are crucial for in-situ or space-based solar research.
Purpose of the Study:
- To describe the design and performance of a compact 2U-format telescope for solar corona studies.
- To detail the optical parameters, coatings, and metrology techniques employed.
Main Methods:
- Utilized a Ritchey-Chrétien optical design for the telescope objective.
- Employed reflective multilayer Aluminum/Beryllium (Al/Be) coatings with specific reflectance and bandwidth.
- Applied an interferometric technique for substrate control and optical system alignment.
Main Results:
- Achieved a compact 2U form factor suitable for space applications.
- The telescope operates at 17.14 nm with a 2x2 degree field of view and 11 arcsecond angular resolution.
- Demonstrated effective use of Al/Be multilayer coatings and interferometric metrology.
Conclusions:
- The developed telescope is a capable instrument for EUV solar corona observation.
- The described design and metrology are suitable for creating advanced solar observation systems.

