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Updated: Jun 16, 2026
Video-rate Scanning Confocal Microscopy and Microendoscopy
Published on: October 20, 2011
Systematic study of aplanatic two-mirror telescopes. 2: the gregorian configuration
This study analyzes aplanatic Gregorian telescopes, finding their performance depends more complexly on system parameters than aplanatic Cassegrain telescopes. Image curvatures are plotted against ray height ratio for various magnifications.
Area of Science:
- Optical Engineering
- Astronomy Instrumentation
Background:
- Aplanatic telescopes offer improved off-axis performance.
- Previous work analyzed aplanatic Cassegrain designs.
Purpose of the Study:
- To systematically analyze the performance of aplanatic Gregorian telescopes.
- To compare Gregorian performance with Cassegrain designs.
Main Methods:
- Utilized a ray trace program for systematic performance analysis.
- Compared results with prior studies on aplanatic Cassegrains.
Main Results:
- Gregorian telescope performance shows a more complex dependence on system parameters compared to Cassegrains.
- Image curvatures were plotted as a function of ray height ratio.
- Analysis included various secondary magnifications and a fixed focal length (1000 cm).
Conclusions:
- The design complexity of aplanatic Gregorian telescopes warrants careful consideration of system parameters.
- Further research may explore optimization strategies for Gregorian designs.
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