Our OD200S and L is one of our most popular Dobsonian models. Being f6 / f/8 the tube easily fits across the back seat of a family car with room to spare. Weighing less than 20 Kg, it is an ideal quick set up medium sized instrument with minimum weight. The mounting is made from aluminium plate, similar to that used in aircraft production and is incredibly strong and coated with hard polymer for scratch resistance.