A short film of two musicians of The Northern Consort, performing William Herschel’s (1769) Sonata in C, in the (1781) Eisinga Planetarium in Franeker, The Netherlands. Peter Barthel produced this film on the occasion of the planetarium receiving UNESCO World Heritage status, in September 2023. A short trailer of the film can be found on the planetarium website; the full film is available on YouTube.