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Fine-error-sensor camera designs and performance for the Lyman Far Ultraviolet Spectrographic Explorer telescope
Applied Optics
|October 2, 2010
Summary
The Lyman Far Ultraviolet Spectrographic Explorer telescope needs a new camera system to accurately guide on faint stars. Two camera designs were developed to create a flat image field suitable for CCD registration.
Area of Science:
- Astronomy and Astrophysics
- Optical Engineering
Background:
- The Lyman Far Ultraviolet Spectrographic Explorer (FUSE) telescope utilizes a glancing-incidence design with a highly curved focal surface.
- Accurate stellar guidance is crucial for FUSE observations, requiring the ability to track stars fainter than apparent magnitude 16 across a 10-arcmin field.
Purpose of the Study:
- To design and evaluate camera systems capable of reimaging the FUSE telescope's curved focal surface.
- To achieve a sufficiently flat image field and appropriate scale for efficient Charge-Coupled Device (CCD) registration.
Main Methods:
- Presented two distinct camera designs for reimaging the telescope's focal plane.
- Analyzed the optical performance and characteristics of each proposed camera design.
Main Results:
- Both camera designs successfully address the challenge of the telescope's curved focal surface.
- The designs provide a flat field and suitable scale for CCD-based stellar registration.
Conclusions:
- The developed camera systems meet the stringent requirements for guiding on faint stars with the FUSE telescope.
- These designs enable improved observational accuracy and data quality for ultraviolet spectroscopy.
