ao - ForOT Optical Turbulence Forecasts
ao - ForOT Optical Turbulence Forecasts
ao - ForOT Optical Turbulence Forecasts
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COMPUTER AIDED TOMOGRAPHY<br />
(“CAT”) IN MEDICINE USES<br />
LINEAR X-RAY SOURCE/DETECTOR<br />
ARRAYS & COMPUTER 2D IMAGE<br />
RECONSTRUCTION.<br />
ADD 1D SCANNING ⇒ 3D IMAGES.<br />
NOTE: LARGE TOMOGRAPHIC ANGLE<br />
IN ATMOSPHERIC TOMOGRAPHY ASTRONOMERS USE:<br />
2D NATURAL OR LASER GUIDE STAR ARRAYS<br />
2D DETECTOR ARRAYS, ONE FOR EACH GUIDE STAR<br />
VERY SMALL TOMOGRAPHIC ANGLES (~ 1 arcmin)<br />
COMPUTER AIDED RECONSTRUCTION<br />
‣ BALLOON, SCIDAR AND OTHER C n2 (h) PROFILING<br />
TOOLS GENERALLY SHOWS A NUMBER OF<br />
DOMINANT THIN OPTICAL TURBULENT LAYERS<br />
‣ EVENTUALLY (I SUSPECT) AT & MCAO WILL<br />
INCLUDE REAL-TIME C n2 (h) KNOWLEDGE TO<br />
OPTIMIZE THE 3D TOMOGRAPHY AND THE<br />
CHOICE OF THE DM CONJUGATE HEIGHTS.<br />
10% best seeing<br />
median seeing<br />
Mauna Kea<br />
SCIDAR
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