"Ed. No.3" Direct Focus 300/996

Igor Gribko's mirror, stainless steel tube 0.5 mm, reinforced with rings made of 18 bakelite plywood inside, mirror cell made of aluminum and also plywood. Front end in Lanikea style by Oleg Chekalin. The weight turned out to be 15.5 kg without the camera and corrector. In the photo, it's still without an electric focuser, now installed. P.S. Wrote an article about the making of this tube https://astronomy.ru/forum/index.php/topic,2087.msg6382399.html#msg6382399