An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : adaptive optics
adaptive optics
  نوریک ِ نیاوشی   
nurik-e niyâveši

Fr.: optique adaptative   

A technique for improving the → image quality of a telescope against → atmospheric turbulence in which image distortions are compensated by high-speed changes in the shape of a small, thin mirror. → wavefront; → wavefront distortion; → wavefront correction; → Strehl ratio; → tip-tilt mirror, → Shack-Hartmann wavefront sensor, → active optics.

adaptive; → optics.

ADaptive Optics Near Infrared System (ADONIS)
     

Fr.: ADaptive Optics Near Infrared System (ADONIS)   

An → adaptive optics instrument used on the → European Southern Observatory (ESO) 3.6-m telescope at La Silla. It was an upgraded version of COME-ON-PLUS, the → Very Large Telescope (VLT) adaptive optics prototype. It had 52 → actuators and performed corrections of the mirror 200 times per second. The reference → wavefront was sensed in the → visible. The observation was done in the → near-infrared (1-5 μm).

adaptive; → optics; → near-infrared; → system.

adaptive optics system
  راژمان ِ نوریک ِ نیاوشی   
râžmân-e nurik-e niyâveši

Fr.: système d'optique adaptative   

An → optical system that uses → adaptive optics.

adaptive; → optics; → system.

extreme adaptive optics
  نوریک ِ نیاوشی ِ استوم   
nurik-e niyâveši-ye ostom

Fr.: optique adaptative extrême   

An → adaptive optics system with high-contrast imaging and spectroscopic capabilities. Extreme adaptive optics systems enable the detection of faint objects (e.g., → exoplanets) close to bright sources that would otherwise overwhelm them. This is accomplished both by increasing the peak intensity of point-source images and by removing light scattered by the atmosphere and the telescope optics into the → seeing disk.

extreme; → adaptive; → optics.