A technique for mitigating the e5fects of this phenomenon uses a reference laser tuned to the 589.2 nanometer emission line of sodium in order to create a guide star.
Dividing the area over which this phenomenon occurs into multiple discrete sections increases the isoplanatic patch radius. The Tatarski model of this phenomenon assumes a Gaussian random distribution with a second-order structure function. SCIDAR and the Hufnagel-Valley model are methods for constructing the C-sub-N squared pro3le of this phenomenon in order to compute the Greenwood time constant and Fried coherence length. A technique for mitigating the e5fects of this phenomenon uses a reference laser tuned to the 589.2 nanometer emission line of sodium in order to create a guide star. Other corrective devices for this phenomenon include Shack-Hartmann wavefront sensors and MEMS-based deformable mirrors. For 10 points, name this phenomenon that motivates the development of adaptive optics because it limits the resolution of images taken at astronomical observatories.
Dividing the area over which this phenomenon occurs into multiple discrete sections increases the isoplanatic patch radius.
atmospheric turbulence [or optical turbulence; or atmospheric distortion; or astronomical seeing; or speckle patterns; or twinkling; or scintillation; prompt on turbulence; prompt on image distortion or similar answers describing problems with telescopes; do not accept "atmospheric extinction"]