Atmospheric Cherenkov telescopes (IACT) of the TAIGA-IACT are part of the TAIGA astrophysical complex located in the Tunka Valley (Republic of Buryatia, Russia), 50 km from Lake Baikal. The complex is a hybrid system of detectors and is being created to solve a wide range of fundamental problems of cosmic ray physics and gamma-ray astronomy. The report presents the result of the mirror alignment of the first TAIGA-IACT using a new, within the framework of the TAIGA-IACT, the Boke method. A criterion for selecting experimental data based on the limiting magnitude parameter is developed and present.
96.50.sd Extensive air showers
95.75.-z Observation and data reduction techniques; computer modeling and simulation
$^1$Applied Physics Institute, Irkutsk State University
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