Abstract
The efficiency of low-order adaptive astronomical systems is estimated on the basis of experimental data obtained at San Pedro Martir observatory with dynamic Hartmann test. The estimation is performed for the 1.5 m telescope. The results show that for the V-band the low-order adaptive correction provides a good improvement in observed images, while for the K-band even the simplest tip/tilt correction gives a very noticeable improvement in the image quality.
