This is Bizibilder’s Solar telescope set-up. The box is a prototype to cover the laptop used for imaging and camera control. It is impossible to see the laptop screen in bright sunlight so the “box” is proving useful. The laptop goes through the large opening (as do Bizibilder’s hands when typing) and the smaller slit is to look through to see the laptop screen. Works quite well but Bizibilder feels a few mods coming on! It is made of “Correx” board – sold in builders merchants as floor protection sheets. It is very lightweight but reasonably rigid.