Stray Light

This course will study the Stray Light in a Maksutov telescope. It will demonstrate some useful tools like filter strings, ray files and path analysis.
About This Course
This course includes the following content:
- Converting Sequential Systems to Non Sequential
- Convert a sequential design of a Maksutov Telescope
- Introduction to Stray Light Analysis
- Reminder of the different steps of a Stray Light Analysis
- Stray Light Example Maksutov Telescope
- Correction of the conversion to non sequential
- Add the mechanical design
- Add scattering properties
- Check straylight on the optical design
- Tools for Stray Light Analysis
- Introduction to filter strings, ray files (ZRD), path analysis
- Study direct path on the Maksutov telescope
- Study of Critical surfaces and Illuminated objects on the Maksutov telescope
- Non Sequential Ghost Analysis
- Example on a Cooke Triplet
Curriculum
- Before we get started....
Stray light Analysis
- 1. How to run a StrayLight Analysis?
- 2. Stray light requirements
Ghost Analysis
- 3. What is a Ghost Analysis?
- 4. Sequential Mode: Running Ghost Analysis
- 5. Sequential Mode: Eliminate Ghost
- 6. Non-Sequential Mode: Ghost Analysis
- Quiz on Ghost Analysis
Importing the Design to Non-Sequential
- 7. Maksutov Telescope
- 8. Explanation of the sequential file
- 9. Convert to Non-Sequential Mode
- 10. Conversion of the Maksutov Telescope
- 11. Correction of the conversion
- 12. Checking the conversion
Build Stray Light Model
- 13. Mechanical Design
- 14. Adding Mechanical Design
- 15. Add Off-Axis Source
- 16. Adjust Non-Sequential Ray-Trace Settings
- 17. Apply Surface Properties (Coating, Scattering)
- 18. Building the Model (Steps 15, 16 and 17)
Computing Stray light performance
- 19. PST
- 20. Detector FOV
Stray light tools
- 21. Filters
- 22. Ray Database (ZRD) Files
- 23. Path Analysis
Evaluate Paths and Baffle Design
- 24. Optical Design Verification
- 25. Direct Path
- 26. Add baffle and vane to eliminate direct path
- 27. Identify Paths
- 28. Critical Surfaces and Illuminated Objects
- 29. Object As a Detector
- 30. Path Analysis
- Quiz on "Evaluate Paths and Baffle Design"
Test your knowledge!
- Stray light Analysis - Test your knowledge!