1. The Installation & Characterization of the Coronagraphic Upgrade to the Extreme Adaptive Optics Test Bed
Darrius Robinson

2. Extra Solar Planets Orbit stars other than the sun
Belong of planetary system
As of Aug 2006, over 200 known exo-planets
First published detection in 1988
Referred to as Young Jupiter Planets
STAR

3. Current Methods Of Detection
Astrometry
Radial Velocity
Pulsar Timing
Transit Method
Gravitational micro-lensing
Circumstellar disks

4. Current Problem: Direct Imaging Technique
Lack of consistent Direct Imaging Detection Technique
Light from stars prevent us from viewing planets
Large contrast difference between stars and planets

5. Coronagraphs

6. Visible VS Infrared

7. Ultimate Goal

8. My Contribution Measuring & Cutting Optical Fiber Cables
Installation of Components on LAO Testbed
Adding Shifts to IDL Code
Adding of Various Apertures to Code
Actual Testing & Collection of Data

9. Current Adaptive Optics Testbed Setup

10. Light & Diffraction Suppression
Pupil Plane
Focal Plane P O S T - C R N A G H P R E - C O N A G H
Camera Plane
Pupil Plane

11. Coronagraph Input & Lyot Stop

12. Various Lyot Stop Sizes
5 Pixels
10 Pixels
15 Pixels
20 Pixels
25 Pixels
30 Pixels
35 Pixels
40 Pixels

13. Simulated VS Actual

14. Contrast Plot with Cat’s Eye (Pre Coronagraph)

15. Contrast Plot with & without Coronagraph Input
Intensity
Distance From Center (λ/D)

16. Acknowledgements
Scott Severson
Darren Dillon
Don Gavel
Katie M