darrius robinson
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Darrius Robinson](https://reader036.vdocuments.net/reader036/viewer/2022062305/56814bd9550346895db8b25c/html5/thumbnails/1.jpg)
Darrius Robinson
The Installation & Characterization of the Coronagraphic Upgrade to the Extreme Adaptive
Optics Test Bed
![Page 2: Darrius Robinson](https://reader036.vdocuments.net/reader036/viewer/2022062305/56814bd9550346895db8b25c/html5/thumbnails/2.jpg)
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
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Astrometry
Current Methods Of Detection
Radial Velocity
Pulsar Timing
Transit Method
Gravitational micro-lensing
Circumstellar disks
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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
Star Vs YJ P
Intensity
YJP Star
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Coronagraphs
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Visible VS Infrared
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Ultimate Goal
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My Contribution
Measuring & Cutting Optical Fiber Cables
Installation of Components on LAO Testbed
Adding Shifts to IDL Code
Actual Testing & Collection of Data
Adding of Various Apertures to Code
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Current Adaptive Optics Testbed Setup
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Light & Diffraction Suppression
Pupil Plane
Camera Plane
Focal Plane
Pupil Plane
PRE -CORONAGRPAH
POST -CORONAGRPAH
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Coronagraph Input & Lyot Stop
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Various Lyot Stop Sizes
5 Pixels
10 Pixels
15 Pixels
20 Pixels
35 Pixels
40 Pixels
25 Pixels
30 Pixels
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Simulated VS Actual
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Contrast Plot with Cat’s Eye (Pre Coronagraph)
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Inte
nsity
Distance From Center (λ/D)
Contrast Plot with & without Coronagraph Input
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Acknowledgements
Darren Dillon Don Gavel
Katie M
Scott Severson