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

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The Installation & Characterization of the Coronagraphic Upgrade to the Extreme Adaptive Optics Test Bed

Darrius Robinson


Extra solar planets
Extra Solar Planets Upgrade to the Extreme Adaptive Optics Test Bed

  • 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


Current methods of detection
Current Methods Of Detection Upgrade to the Extreme Adaptive Optics Test Bed

Astrometry

Radial Velocity

Pulsar Timing

Transit Method

Gravitational micro-lensing

Circumstellar disks


Current problem direct imaging technique
Current Problem: Direct Imaging Technique Upgrade to the Extreme Adaptive Optics Test Bed

  • Lack of consistent Direct Imaging Detection Technique

  • Light from stars prevent us from viewing planets

  • Large contrast difference between stars and planets


Coronagraphs
Coronagraphs Upgrade to the Extreme Adaptive Optics Test Bed


Visible vs infrared
Visible VS Infrared Upgrade to the Extreme Adaptive Optics Test Bed


Ultimate goal
Ultimate Goal Upgrade to the Extreme Adaptive Optics Test Bed


My contribution
My Contribution Upgrade to the Extreme Adaptive Optics Test Bed

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


Current Adaptive Optics Testbed Setup Upgrade to the Extreme Adaptive Optics Test Bed


Light diffraction suppression
Light & Diffraction Suppression Upgrade to the Extreme Adaptive Optics Test Bed

Focal Plane

Pupil Plane

P

O

S

T

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C

O

R

O

N

A

G

R

P

A

H

P

R

E

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C

O

R

O

N

A

G

R

P

A

H

Pupil Plane

Camera Plane


Coronagraph input lyot stop
Coronagraph Input & Lyot Stop Upgrade to the Extreme Adaptive Optics Test Bed


Various lyot stop sizes

25 Pixels Upgrade to the Extreme Adaptive Optics Test Bed

30 Pixels

Various Lyot Stop Sizes

5 Pixels

10 Pixels

15 Pixels

20 Pixels

35 Pixels

40 Pixels


Simulated vs actual
Simulated VS Actual Upgrade to the Extreme Adaptive Optics Test Bed


Contrast Plot with Cat’s Eye (Pre Coronagraph) Upgrade to the Extreme Adaptive Optics Test Bed


Contrast Plot with & without Coronagraph Input Upgrade to the Extreme Adaptive Optics Test Bed

Intensity

Distance From Center (λ/D)


Acknowledgements
Acknowledgements Upgrade to the Extreme Adaptive Optics Test Bed

Scott Severson

Darren Dillon

Don Gavel

Katie M


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