@vanich.fanich: I build a pinhole telescope to observe the sun ☀️ So I wanted to observe the sun but I don't have a sun filter for the telescope, and I build a pinhole telescope using tubes from the foil, a bit of glue, foil for the "lens" and now I can observe the sun easily with it ;D #pinhole #sunobservation #pinholeprojector #Astronomy #DIY