Astrophysics (Index)About

adaptive optics

(AO, adaptive-optics)
(optical instruments that dynamically adapt to atmospheric distortion)

The term adaptive optics (AO) indicates systems that correct distortions from the atmosphere using input from a sensor that measures the distortion. Typically, the sensor tracks the distortion (e.g., a slight mislocation) of a known fixed source, such as a star or even an artificial source of light reflected off the atmosphere itself from a laser. This fixed source must be near the line of sight to the object under observation. The same distortion presumably affects objects in that area of the celestial sphere, including the observation target.

Some current and planned telescopes using adaptive optics:

Multi-conjugate AO is adaptive optics that is specifically designed to correct for distortion at multiple distances from the telescope.


(telescopes,reflector,optics,instruments)
Further reading:
http://en.wikipedia.org/wiki/Adaptive_optics

Referenced by pages:
actuator
Airy disk
Canada-France-Hawaii Telescope (CFHT)
coherent light
diffraction limited
deformable mirror (DM)
European Extremely Large Telescope (E-ELT)
eigenmode
extremely large telescope (ELT)
ESO 3.6m Telescope
European Southern Observatory Very Large Telescope (ESO VLT)
extreme adaptive optics (ExAO)
Gemini Observatory
Giant Magellan Telescope (GMT)
Gemini Planet Imager (GPI)
Hale Telescope
Keck Observatory
Large Binocular Telescope (LBT)
lucky imaging
Magellan Telescopes
MMT
New Technology Telescope (NTT)
Overwhelmingly Large Telescope (OWL)
parallax
scintillometry
seeing
SOAR
speckle suppression
SPHERE
stacking
Strehl ratio
Subaru Telescope
Thirty Meter Telescope (TMT)
tomography
wavefront sensor
wavefront error (WFE)
William Herschel Telescope (WHT)

Index