Tom K

I am looking for a simple star gazing accessory that I once owned. It looks like a rubber playground ball with no air in it – a collapsed semi sphere. You can slide it around to get the current night sky that is above you. Do any of you know about this and where I could get one? Thank you! UPDATE: Tenor Viol suggested it was a planisphere, so I did some searching on that & found the product. Here is a website describing it: https://www.universalworkshop.com/2017/01/22/devices-1-star-hat/ Does anyone know if someone has started selling it again? Or perhaps someone has one they would sell to me? Thank you!