WOW, many years ago I lived in Japan and my dream was to have a Pentax MS5 and Pentax 150mm refractor. In fact the 150mm gave the sharpest view of any telescope I ever saw through though it was of a village on the other side of the valley during a typhoon. Much sharper than Taks in the day. Pentax were stunning scopes back then. I wish could afford that one.