Tal-250K, LB Celestron 2x, equivalent focal length ~4.2 meters. Camera QHY5III290C, 100% of the original. Image quality at the moment of shooting about second-third grade on the Antoniadi scale, noticeable high-frequency turbulence, light haze, no wind. Observatory "AstroVetkino" https://astronomy.ru/forum/index.php/to ... 764.0.html.
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