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Published on: April 28, 2023
Wide-field compact catadioptric telescope spanning 0.7-14 μm wavelengths
Daniel L Marks1, Nathan Hagen, Mark Durham
1Department of Electrical and Computer Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA.
Applied Optics
|July 12, 2013
Summary
A new compact catadioptric telescope covers 0.7-14.0 μm wavelengths, replacing multiple infrared telescopes. Prototypes demonstrate performance near predicted values, enabling simultaneous multiband imaging.
Area of Science:
- Optical engineering
- Infrared astronomy
Background:
- Traditional astronomical instruments often require multiple telescopes for different infrared bands.
- Existing single-band telescopes can be lengthy, limiting portability and deployment options.
Purpose of the Study:
- To develop a wide-field, compact catadioptric telescope capable of spanning a broad spectral range (0.7-14.0 μm).
- To design an instrument that can replace multiple specialized infrared telescopes and enable simultaneous multiband imaging.
Main Methods:
- Design and construction of a compact f-1.2, f-1.6 effective illumination catadioptric telescope.
- Integration with a multiband focal plane array for simultaneous imaging across various wavelengths.
- Performance testing of constructed prototypes.
Main Results:
- The telescope successfully covers the 0.7-14.0 μm wavelength range.
- The instrument's track length is shorter than most single-band telescopes.
- Prototype performance closely matches predicted values.
Conclusions:
- The developed catadioptric telescope offers a versatile, compact solution for infrared astronomy.
- Simultaneous multiband imaging is achievable with the integrated focal plane array.
- The instrument's design facilitates the replacement of multiple dedicated telescopes, enhancing efficiency.
