I have a large (maybe 4 metres, 12 feet in diameter) metal dome which is in need of some refurbishment. Does anyone have any particular advice about what to cover the interior with? Previously there was some polystyrene panels fixed up with wallpaper glue which over time have broken off and land on my optics and equipment, something I'm not very happy about. Take a look a the video or pictures in the instagram for what has happened over time (https://www.instagram.com/rhulobservatory)
Is there any particular need to cover the interior at all?