This is genuinely fascinating stuff, thanks for your responses guys!
Presuming there is truth in the rumour that the projector was stored at Alton Towers, my almost completely unfounded punt would be that JB bought it on the cheap at some point expecting to upgrade the Planetarium. It would be consistent with his penchant for a bargain, not necessarily considering the practicalities of a purchase.
Presuming there is truth in the rumour that the projector was stored at Alton Towers, my almost completely unfounded punt would be that JB bought it on the cheap at some point expecting to upgrade the Planetarium. It would be consistent with his penchant for a bargain, not necessarily considering the practicalities of a purchase.