1. Introduction
1.1. Three Mirror Anastigmat Telescopes
1.2. Advantage of an unobstructed pupil
1.3. Outline

2. Telescope design and optimization
2.1. Telescope Design Parameters
2.2. Design Constraints
2.3. Obstructed TMA design
2.4. Unobstructed TMA design
2.5. Optimization
2.6. PSF Computation

3. Image Simulation And Model Fitting

4. Results and Discussions
4.1. Case #1
4.2. Case #2
4.3. Case #3
4.4. Discussion of the Results

5. Conclusion